93 East 6600 South, Suite 510. Salt Lake City, UT 84121 ; Phone: (888) 833-8570.OneMain loan specialists in the S Redwood Rd branch in Salt Lake City, UT are here to help with personal loan needs. Contact Discover® Personal Loans with any questions on personal loan basics, debt consolidation, or other personal loan topics. We offer local commercial lending decisions with flexible options. Like your business, we are part of the community. Salt Lake City, UT 84165-0250. The process should take a minimum of 30 days to complete. What is a Payoff Agreement? A payoff agreement is an informal contract in which a creditor agrees to accept the balance of a debt owed as full payment.