Apology
Apology message to customers: 12 templates for delays, mistakes and slow replies
Quick answer
How do you apologize to a customer by message?
An apology message to a customer has four parts: the apology right at the start, what happened in one line, what you will do to fix it and by when. Do not use "any inconvenience" and do not blame the system. If there was a loss, also say how you will compensate, without waiting for the customer to ask.
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Messages to apologize for a late delivery, wrong order, overcharge and slow reply. Copy them and replace what is in brackets.
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See the 30 automatic message templates for customers, grouped by moment.
Summary in 7 facts
- Messages to apologize for a late delivery, wrong order, overcharge and slow reply.
- An apology message to a customer has four parts: the apology right at the start, what happened in one line, what you will do to fix it and by when.
- Do not use "any inconvenience" and do not blame the system.
- The delivery will be late As soon as you know, before the agreed deadline.
- Wrong product When the customer received a different item.
- I'm sorry, [Name], we sent the [wrong product] instead of the [right product].
- A delay of a few hours When the question sat unanswered in the middle of the day.
By the numbers
| Number | What it means |
|---|---|
| 30 templates | See the 30 automatic message templates for customers, grouped by moment. |
| 2.2 minutes | The CertuAI team measured how long a team member takes to reply on WhatsApp, across 37 accounts: half of the replies went out within 2.2 minutes, but 1 in every 10 took more than 139.9… |
| 9,639 replies | Replies from team members: 9,639 replies from 37 accounts, Aug 26 to Sept 24, 2026. |
| 38,908 replies | AI replies: 38,908 replies, Jul 30 to Sept 30, 2026. |
What the customer wants to know in each apology
The apology is the first sentence. The information is the rest.
| Problem | What the customer wants to know | What goes in the message |
|---|---|---|
| Late delivery | When it arrives | The new deadline and the shipping notice |
| Wrong product | How the exchange works | The ship date and who pays shipping |
| Overcharge | When the money comes back | The date and the proof of refund |
| Slow reply | The answer | The answer, in the same message |
| Bad service | Whether anyone cares | The name of the person in charge and a phone call |
Swipe the table sideways to see all the columns.
Overdue message for a customer
The delivery will be late
As soon as you know, before the agreed deadline.
Oi, [Nome]. Preciso te pedir desculpa: a entrega de [produto] não vai chegar em [data combinada]. O novo prazo é [data], e eu te aviso assim que sair daqui.
now ✓✓The delivery is already late
When the deadline has passed and the order has not arrived.
Peço desculpa, [Nome]. Seu pedido devia ter chegado [ontem] e não chegou. Já cobrei a transportadora, e até as [hora] eu te digo onde ele está.
now ✓✓The service was not ready
Auto shop, repairs, custom orders and other services with a date.
Desculpa, [Nome]: o [serviço] não ficou pronto hoje como combinamos, porque [motivo]. Fica pronto [amanhã, até as 16h]. Se esse prazo te atrapalhar, me fala que eu dou outro jeito.
now ✓✓You are going to be late for the appointment
A visit, meeting or appointment at a set time.
Oi, [Nome], desculpa: estou atrasado para o nosso horário das [hora] e chego às [hora]. Se não der para esperar, eu remarco para quando for melhor para você.
now ✓✓
Apology message for an order or billing mistake
Wrong product
When the customer received a different item.
Me desculpa, [Nome], mandamos o [produto errado] no lugar do [produto certo]. O certo sai daqui [hoje] e o frete da troca é por nossa conta.
now ✓✓Overcharge
Wrong amount on the boleto (Brazilian bank slip), card or PIX (Brazil's instant payment).
Peço desculpa, [Nome]: cobramos [valor] a mais no seu [pedido ou boleto]. A diferença volta para você até [data], e eu mando o comprovante por aqui.
now ✓✓Wrong information
When you gave the wrong price, deadline or rule.
Desculpa, [Nome], eu te passei uma informação errada: [o que foi dito]. O certo é [informação correta]. Se isso mudar a sua decisão, me avisa que eu ajusto sem custo.
now ✓✓
Apology message for a slow reply
A delay of a few hours
When the question sat unanswered in the middle of the day.
Oi, [Nome], desculpa a demora para responder. Já li tudo: [resposta à pergunta]. Posso te ajudar em mais alguma coisa?
now ✓✓Message forgotten for days
When you find an old conversation with no reply.
Oi, [Nome]. Sua mensagem de [dia] ficou sem resposta, e a falha foi nossa. Você ainda precisa de [assunto]? Se sim, eu resolvo hoje.
now ✓✓A promised follow-up that did not come
When you said "I'll let you know tomorrow" and did not.
Oi, [Nome]. Eu fiquei de te dar um retorno [ontem] e não dei, me desculpa. A resposta é: [resposta]. O próximo passo é [passo].
now ✓✓
CertuAI demo with a fictional clinic: the question arrived at 12:39 a.m. and the answer went out right away. A reply that goes out right away does not need an apology.
Apology message after a complaint
Bad service
When the customer complained about how they were treated.
Oi, [Nome], aqui é [nome], responsável pela [Empresa]. Soube do que aconteceu no seu atendimento e peço desculpa. Não é assim que a gente trabalha. Posso te ligar hoje para resolver?
now ✓✓After it is resolved
At the end, when the problem is over.
Oi, [Nome]. Conferi agora: [o que foi resolvido]. Desculpa de novo pelo trabalho que isso te deu, e obrigado por ter avisado a gente.
now ✓✓
Three rules for an apology
What makes the apology count.
Apology in the first line
Before the explanation. Someone who reads the reason first understands that you are defending yourself.
New deadline, with day and time
"As soon as possible" is not a deadline. "Tomorrow, by 4 p.m." is.
Compensate without being asked
Shipping for the exchange, refund of the difference, priority in the queue. Say what you will do before they demand it.
See how it looks in your industry
Each industry gets different questions on WhatsApp. Pick yours to see how CertuAI's AI serves that kind of customer.
What to do after sending the apology message
The message opens the conversation. What solves it is what comes after.
Meet the new deadline
A second delay after the apology costs more than the first.
Say when it is fixed
Do not wait for the customer to ask whether it worked. Send the confirmation.
Note it in the customer's record
So whoever helps next time knows what happened and does not repeat the mistake.
Fix the cause
If the same apology goes out every week, the problem is not the message.
Apologizing in public and apologizing in the conversation
When the complaint comes in a public review, the reply there is short: acknowledge it, apologize and say you will contact the person. The details, like amount, order and address, stay for the private conversation. Someone who reads the review later wants to see that someone answered, not the whole case.
In the conversation, do not use the ready-made text without adjusting it. A customer who received “we regret the incident” has already received the same phrase from ten other companies. What changes is their name, what happened to them and the deadline.
The phrases for when the customer is still angry are in phrases for customer service. To find out whether they were satisfied afterward, see the service rating message, and to close the conversation, the conversation closing message. The general list is in auto-replies for customers. So that no question sits for hours, see automatic customer service on WhatsApp.
When not to apologize to a customer
Too much apology loses its value. In four cases, another message works better.
- You do not yet know what happened: first “I'll check and get back to you by [time]”. An apology before understanding becomes a promise you may not keep.
- The cause is outside the business: a strike, rain, a power outage. Explain, say what you are doing and give the deadline. Do not take on blame that is not yours.
- It is the third time for the same problem: another apology irritates. Fix it for good and compensate.
- “Sorry for any inconvenience”: the phrase does not say which inconvenience or what will be done. Replace it with what happened and the deadline.
How long a customer waits for a person: CertuAI data
A good share of apologies are for delays. The CertuAI team measured how long a team member takes to reply on WhatsApp, across 37 accounts: half of the replies went out within 2.2 minutes, but 1 in every 10 took more than 139.9 minutes, over two hours.
The AI, measured separately, replies in seconds. The two times are not a one-to-one comparison: a person only enters the count in conversations where the AI did not reply first.
| What was measured | Result |
|---|---|
| Time within which half of a team member's replies went out | 2.2 minutes |
| Time within which 9 out of 10 of a team member's replies went out | 139.9 minutes |
| Time within which half of the AI's replies went out | 11.7 seconds |
| Time within which 9 in 10 of the AI's replies went out | 20.7 seconds |
Swipe the table sideways to see all the columns.
Source: CertuAI's measurement on its own data, published at certu.com.br/dados. Replies from team members: 9,639 replies from 37 accounts, Aug 26 to Sept 24, 2026. AI replies: 38,908 replies, Jul 30 to Sept 30, 2026. A person only enters the count in conversations where the AI did not reply first, so the two times are not a one-to-one comparison. Only aggregated numbers, no conversation read by a person.
Frequently asked questions
How do you apologize to a customer for a delay?
Apologize in the first line, give the new deadline with day and time, and say you will confirm when the order ships. If you can, send it before the customer asks.
How do you apologize to a customer professionally?
Straight to the point and without blaming others: what happened, what you will do and by when. Sign with your name. "We regret the incident" says none of that.
What should you write in a delay message to a customer?
What was delayed, the reason in one line, the new deadline and what the customer can do if the deadline does not work, like canceling or rescheduling.
Should I offer a discount along with the apology?
When there was a loss, yes: offer the compensation before the customer asks. For a small delay, a quick reply and an apology are enough.
How do you apologize for a slow reply?
With the apology and the answer in the same message: "Sorry for the delay, [Name]. I read everything: [answer]." Apologizing and leaving the answer for later is one more wait.
What should you not write in an apology?
"Sorry for any inconvenience", "it was a system error" and "as soon as possible". None of them says what happened, who is fixing it or when.
Where to go next?
Less delay, fewer apologies
In CertuAI, the AI replies right away, at any hour, with what you taught the Brain, and the customer is not left waiting for the first reply. When the conversation is a complaint, it alerts you and leaves the matter to a person.
From US$ 75 per month.
Create my agentOi, [Nome]. Preciso te pedir desculpa: a entrega de [produto] não vai chegar em [data combinada]. O novo prazo é [data], e eu te aviso assim que sair daqui.now ✓✓
This is the first message on this page, sent by the AI in your tone, with nobody at the counter.
In short
How do you apologize to a customer by message? An apology message to a customer has four parts: the apology right at the start, what happened in one line, what you will do to fix it and by when. Do not use "any inconvenience" and do not blame the system. If there was a loss, also say how you will compensate, without waiting for the customer to ask.
About CertuAI: CertuAI is the AI that answers a small business's WhatsApp, Instagram and Messenger 24/7, with a built-in CRM, and is a Tech Provider on Meta's WhatsApp Business Platform. Paid plans start at US$ 75 a month, with no lock-in. Create my agent