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.If you think you have overpaid your Property Tax bill, you can contact the Finance. Department at (912)729‐5613 to see if you are entitled to a refund. Our document template is designed to make the process of writing an "Inform a Customer of an Overpayment" letter quick, easy, and stress-free. Be sure to include your parcel or account number in the email. Fill in the information needed, such as the Reference, Date Paid and Amount. The salary overpayment resulted because . DCH Overpayment Recovery. Program. First, find out the correct formal form of address for the king: His Royal Majesty; His Majesty the King of…, etc.