Reply To A Customer Complaint Email. You will only increase the ire of a customer if you take days or weeks to reply to their issue, much less to resolve it. Previously, thank you first because someone has used the facilities of the company that finally complained.

The following is the email format for a response to complaint letter. Thanks for your patience and have a great day, [name] 6. We are currently {investigating the matter/working on a resolution, etc.}.