Open the Application for Refund; you may fill it out online, but then you must print the completed form. Sign the form in the presence of a Notary Public.In this article, we'll show you how to write a refund request letter template that not only grabs attention but also persuades companies to act in your favor. If you have any questions regarding your setup options, you will need to contact myFranklin Card Customer Care (BankMobile) at 1.877. Over Payment Refund Letter To Customers Template. If you have an overpayment, we'll send you a decision letter. It will say how much you owe.