We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error. Overpayment or underpayment.Contact My Office And Take The First Step Toward Resolving Your Issue. Dallas, TX 75284-1004. Please complete the form below and include it with your refund check to ensure it is accurately applied in our system in a timely manner. Please download the form, complete each field and print. Include the form with your refund so we can properly apply the refund and record the receipt. The new remittance addresses will be listed on the remittance form you receive in the mail with claim refund requests.