How To Write A Letter Responding To A Complaint . [13] on the top left, write your name, title, company (if applicable), and address. If you agree that the complaint is justified (even if only in part), say so, and express your desire to correct the problem. 8 Examples of Response to Complaint Letter and How to Write It from www.hegnessevents.com Also, the answer to complaint letters is very critical for the reputation and market value of the company as it represents the company. Make sure you understand the circumstances of the incident in question and then restate those circumstances in your response as a way of validating the customer’s. We apologetically writing this letter for the inconvenience faced by you.