Date

Dear _________,

Apparently your payment was received in a timely fashion to our Accounting Department; however, it was credited to an account with a similar name to yours. Therefore, we commenced sending you our standard notice requesting payment, in keeping with our routine policy.

We sincerely apologize for this error and the time it has taken to straighten out the problem.

You are a valued customer of ours! We do appreciate your business and the opportunity to serve you and look forward to continuing our relationship with you in the future.

Sincerely,