DOB NOW filing fee screen. How long will it take to get a decision?Most customers are receiving responses less than two weeks after completing and submitting the DocuSign. 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 were overpaid, you will receive a written notice in the mail. The salary overpayment resulted because . We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error.