The first step is to get in touch with your lender or loan servicer. You can find their contact information on your monthly statements.No credit card required. Digitally sign with 1 click. You can also request a payoff statement. Call us at (713) 850-1600 or visit a branch. Let's start the process together! Notice of Error, Qualified Written Requests, Requests for Information. Location_on P.O. Box 251027 Plano, TX 75025. USPS Federal Credit Union is open to Postal Service employees and select groups within 50 miles of a branch.