We will provide a payoff statement and accept payment on the account. Complete our Mortgage service or holder of the lien on a property form to receive a copy.A payoff agreement is an informal contract in which a creditor agrees to accept the balance of a debt owed as full payment. When you sign up online to request a payment plan, please note that this is a REQUEST ONLY. If you want additional information, please follow the instructions in the letter. Old Bethpage, NY 11804. Payments. Ally Credit Card P.O. Box 660371. Log Out. Category. ×. More. Settings; Log Out. Back. Explore the best banking services with IBC across Oklahoma and Texas.