How to Respond to a Complaint Letter + Example
Download this template
Free .docx. No signup.
A customer took the time to complain in writing, which means they want you to fix it more than they want to leave. Your reply decides which happens. This page gives you the structure of a response that keeps the customer and protects your name, a complete worked example, and a free .docx you can adapt, with no signup.
This is the business side: you received a complaint and need to answer it. If you are the customer writing the complaint, use the complaint letter guide instead.
Reply quickly, and to the person
Speed is the first signal. A reply within a day or two tells the customer you take them seriously; a slow one tells them the opposite before they read a word. Open with their name, not "Dear Customer." Most complaint replies open with a template greeting, so a name and a quick turnaround already set yours apart.
The structure of a good response
A strong reply does six things, in order:
- Thank them. They gave you a chance to fix a problem you might not have seen.
- Apologize, and own it where the fault is yours. A plain "I am sorry this happened" does more than a defensive paragraph. If your company made the mistake, say so.
- Explain what happened. A short, honest account of what caused it and what you have changed so it does not recur, without making excuses.
- State the fix, with a specific timeline. Exactly what you are doing and by when.
- Put things right. For a genuine fault, a remedy is often not optional: consumer-protection laws such as the UK Consumer Rights Act 2015 and Kenya's Consumer Protection Act 2012 give the customer a right to a refund, repair, or replacement at your cost. A further goodwill gesture, like a discount, is your call, matched to the size of the problem.
- Invite direct follow-up. Give them a way to reach you personally if it is not resolved.
A complete example
Grace wrote to Summit Retail about a damaged order; her letter is the worked complaint on formal letter formats, and this is the reply to it, so the two pages carry one exchange between them. The response below names the cause, says what changed, and gives Grace a clear choice with a firm date.
P.O. Box 54321 - 00200, Nairobi, Kenya
22 July 2026
Ms. Grace Achieng
P.O. Box 12345 - 00100
Nairobi, Kenya
Dear Ms. Achieng:
Thank you for your letter of 15 July about order 4821. I am sorry that two of the items arrived damaged. That is not the standard we hold ourselves to, and you were right to tell us.
I have looked into what happened. The parcel was packed without the padded inserts we normally use, which we traced to a gap in our warehouse checklist. We have corrected the checklist and added a second inspection before dispatch.
Here is how I would like to put it right, whichever you prefer. I can refund the full KSh 8,400 to your card, showing within three business days, or ship replacements at no charge within two business days. Reply to tell me which you would rather have and I will action it the same day.
Thank you again for giving us the chance to put this right. If anything is still not resolved, contact me directly on the details below and I will handle it personally.
Yours sincerely,
James Otieno
Customer Service Manager, Summit Retail Group
+254 20 555 0104 | james.otieno@example.com
A reply you can adapt
Fill the brackets from the complaint in front of you: their reference, their dates, their words for what went wrong. A reply that gives the fault back in the customer's own description reads as read rather than processed.
[Address]
[Date]
[Customer Name]
[Customer Address]
Dear [Mr./Ms. Surname]:
Thank you for your [letter / email] of [date] about [the issue]. I am sorry that [restate the problem briefly]. [If the fault was yours, take responsibility plainly.]
[What happened: a short, honest explanation, and what you have changed so it does not happen again.]
[The fix: exactly what you are doing, with a specific timeline. Offer a choice or a form of redress where appropriate.]
Thank you for giving us the chance to put this right. If anything is still unresolved, contact me directly at [phone / email] and I will handle it personally.
Yours sincerely,
[Your Name]
[Title, Company]
[Contact details]
Be specific about the timeline
What separates a real reply from a brush-off is a date the customer can hold you to. "We will look into this soon" reassures no one; "your refund will show within three business days" tells them exactly what to expect and when. If you cannot resolve it at once, still commit to a date: "I will call you by Thursday with an update." Then hit the date you named.
When you think the customer is mistaken
When the fault is not yours, you can hold that line without being cold. Thank them, acknowledge the frustration, and explain plainly what your records show. Do not apologize for a mistake you did not make, because a false admission can be used against you later, but do offer a next step: a copy of the order confirmation, a check of the delivery record, or a goodwill gesture if you want to keep the relationship. Staying polite and factual works better than getting defensive, and better than caving to a claim that is not right. The .docx above includes a second template for this case; the shape of it is below.
Thank you for your email of [date] about [the issue]. I am sorry you have had a frustrating experience, and I want to help sort it out.
I have checked our records, and [what they show: the order shipped on [date] to the address on file, the payment cleared, the item matches what was ordered]. I have attached [the order confirmation / the delivery record] so you can see the same detail I have.
If something here does not match what you have, send me [the tracking number / a photo / your order reference] and I will look again straight away. I want to be sure you are treated fairly.
Yours sincerely,
[Your Name]
[Title, Company]
Email or a printed letter?
Email is fine, and usually faster, for most complaints, and speed matters here. Send a printed, signed letter when the complaint is serious, when money or a legal issue is involved, or when the customer wrote to you on paper and expects the same. Either way, keep the same structure and keep a copy for your records. For the layout of a printed reply, see the formal letter formats guide.
Frequently asked questions
How quickly should I respond to a complaint?
Within one to two business days. A fast reply signals that you take the customer seriously, even if the full fix takes longer. If you cannot resolve it at once, acknowledge it quickly and commit to a date for the resolution.
Should I apologize even if it was not our fault?
Apologize for the frustration, not for a mistake you did not make. A false admission of fault can be used against you. Acknowledge the situation, explain what your records show, and offer a fair next step.
What should a complaint response letter include?
A thank-you, an apology where due, a short explanation of what happened and what you changed, the fix with a specific timeline, any redress, and a way to reach you directly. The example above shows all six.
Do I have to offer compensation?
For genuinely faulty or defective goods or services, often yes: consumer-protection laws such as the UK Consumer Rights Act 2015 and Kenya's Consumer Protection Act 2012 give the customer a right to a refund, repair, or replacement at your cost, regardless of goodwill. Beyond that legal minimum, extra gestures like a discount are discretionary and should match the size of the issue.
Should I reply by email or letter?
Email for speed on most complaints. Use a printed, signed letter for serious complaints, anything involving money or a legal issue, or when the customer wrote to you on paper.
Sources
- Customer-service practice on complaint handling, taken from published service guidance rather than from a single vendor. The remedies in the letter rest on the two consumer statutes above, which are the part a reader can check.
- UK Consumer Rights Act 2015 and Kenya Consumer Protection Act 2012 (No. 46 of 2012, s.11), consumer remedies for faulty goods: refund, repair, or replacement at the supplier's cost.