This brief but important letter notifies a customer that he or she has overpaid you. It can serve as a very good customer relations letter.This memorandum serves as notification of an overpayment of wages that you received and the subsequent repayment that is your responsibility. The salary overpayment resulted because . When are delinquent real property taxes transferred to Wayne County Treasurer Office? The following includes detailed information to help you understand your specific notice. To begin, select the notice type you received from the list below.