[Your letterhead, if desired; if not, your return address]
[Date of letter—month, day, and year]
[Recipient's first and last names]
[Street or P.O. box address]
[City, State ZIP code]
Dear [recipient's name]:
Thank you for contacting Advanced Communications regarding the error that you noticed on your bill from us that was dated May 30, 2011. We understand that you were charged $15 in error for a long distance telephone service that you do not have. We apologize for this error and for any inconvenience it might have caused. We have credited $15 back to your account, and you should see this noted on your next bill.
Please contact us again if you have further questions about this error or need additional information. Thank you for your business and for your patience regarding this billing error.
[Sender's first and last names]