How to reply to a customer complaint email: a 5-part structure and 12 templates
How to answer an angry or disappointed customer email — what to say first, what to avoid — with 12 reply templates for delays, refunds, faults and rude staff.
Reply to a complaint email within one working day, in five parts: thank the customer, apologise for the specific problem, explain briefly what happened, say exactly what you will do and by when, and give them a direct way to reach you. Keep it under 150 words and write it as a person, not a policy. If you need time to investigate, send a short holding reply now and the full answer later.
Why the first reply decides how it ends
A customer who writes a complaint email is still a customer — one who cared enough to tell you rather than leave quietly. Most of them want three things: to be heard, to know what went wrong, and to know what happens next. A reply that gives all three usually ends the complaint. A reply that gives none of them turns one email into five, and sometimes into a public review.
Speed matters more than polish. A short, human reply within a few hours beats a perfect one three days later. If you cannot solve the problem today, say so and say when you will.
The 5-part structure
- Thank them for writing. "Thank you for letting us know" — it signals that complaints are welcome.
- Apologise for the specific problem. "I'm sorry your order arrived damaged", not "we apologise for any inconvenience".
- Explain in one sentence. What went wrong, without excuses or blame. Skip this if you do not know yet.
- Say what you will do, and when. A refund today, a replacement by Thursday, a call tomorrow at 10.
- Give a direct line. Your name, and a way to reach you that skips the queue.
Read the customer's email twice before you reply, and answer every question they asked. A reply that ignores one of three questions reads as if you did not read the email.
12 complaint reply templates
Orders and delivery
Hi Sarah, thank you for letting us know, and I'm sorry your order is late. Our courier had delays in your area this week. I've checked the tracking and it will reach you tomorrow; I've also refunded your delivery fee. If it hasn't arrived by Friday, reply to this email and I'll send a replacement.
Hi Mark, I'm sorry the vase arrived broken — that's disappointing, especially for a gift. A replacement is on its way today by express delivery, and there's no need to return the broken one. Thank you for sending the photo.
Hi Priya, apologies — we sent the wrong colour. The correct one ships today, and a courier will collect the other on the same visit. You don't need to do anything else.
Product and service
Hi James, thank you for writing, and I'm sorry the blender stopped working after two months. It's covered by our warranty. Could you send your order number? I'll arrange a replacement as soon as I have it.
Hi Fatima, I'm sorry about your visit on Saturday. Waiting 40 minutes without an update isn't the experience we want for anyone, and I've shared your email with the team. I'd like to make it right — could I call you tomorrow?
Hi Daniel, thank you for telling me about this, and I'm sorry. Everyone should be treated with respect, and what you describe falls short of that. I'm speaking to the team member today. I'll write back by Friday to tell you what we've changed.
Billing and refunds
Hi Lena, you're right — you were charged twice, and that's our error. I've refunded the second payment today; it should appear in 3–5 working days. I'm sorry for the worry.
Hi Omar, I'm sorry your refund is taking so long. I've checked, and it was approved but stuck in our system. I've pushed it through manually this morning, and you should see it within two working days.
Hi Grace, thank you for explaining. Our return window is 30 days and your order is just past it, but since the fault appeared so soon, I've approved a full refund as an exception. The return label is attached.
When you need more time, or have to say no
Hi Tom, thank you for your email. I'm looking into what happened with your booking and will reply with a full answer by tomorrow at 2 pm. I'm sorry for the trouble in the meantime.
Hi Rachel, thank you for writing. I've looked carefully, and I'm not able to refund a service that has already been delivered. What I can do is offer a free follow-up session next week to fix the issues you mention. Would Tuesday or Wednesday suit you?
Hi Chris, I can see you're very frustrated, and I want to help. From your email, the problem is that your account was locked after the update. I've unlocked it now. If anything still isn't working, reply here and I'll deal with it personally.
Phrases to use and phrases to avoid
Use: "Thank you for letting us know", "You're right", "I'm sorry that…", "Here's what I've done", "I'll update you by…".
Avoid: "We apologise for any inconvenience" (it apologises for nothing in particular), "As per our policy" (lead with what you can do instead), "Unfortunately" in the first sentence, and anything that suggests the customer is to blame.
If the complaint later appears as a public review, the same structure works there — see how to respond to a negative review.
Answering complaints faster
The hardest part of a complaint reply is writing the first draft calmly. AI Reply Writer adds an ✦ AI Reply button to the reply box in Gmail and Outlook. It reads the whole thread — including photos and PDFs the customer attached, such as a damaged item or an invoice — and drafts a reply that names the actual problem. You can add a short instruction like "apologise, refund delivery, replacement Thursday". You edit the draft and send it yourself. The free plan includes 20 replies a month.
If the reply needs a clearer tone, see polish this message; for an apology without a complaint, see apology email templates.
Frequently asked questions
How quickly should you reply to a complaint email?
Within one working day, and sooner if you can. If you need time to investigate, send a short holding reply straight away with a time for the full answer.
How do you start a reply to a complaint?
Thank the customer for writing, then apologise for the specific problem they described. For example: "Thank you for letting us know, and I am sorry your order arrived damaged."
Should you apologise if the company is not at fault?
You can apologise for the customer's experience without accepting blame. Then explain what happened and what you can do.
What should you never say to a complaining customer?
Avoid blaming them, quoting policy before offering help, vague apologies such as "for any inconvenience", and promises you cannot keep.
