Loan Payoff Request correspondence on SSFCU letterhead. Instructions. Fill out online and submit.We will only issue a payoff good through the next Change Date. If the closing date is past the next Change Date an updated. San Antonio area: 210-200-6770. Outside of these areas: 800-346-5312. Depending on your lender, you may have to sign in to an online account, call a helpline, or send a formal letter to start the request process. Find the most convenient method for you. This financial calculator helps you find out. Main Line: (210) 736-7600 ; Jeff Line: (833) JEFF LINE or (833) 533-3546 ; Customer Service: (210) 736-7600 ; Customer Service Hours: Mon - Fri: am - 5pm.