Lease Finance Group [LFG]  -  they will charge you forever!

My suggestion is that you stop further payments and discontinue communicating with them by telephone. Direct them to only communicate with you in writing. Send all of your communications via U.S. Mail, certified and return receipt requested. Make them sign for it. Include certified confirmation # under the date line of each letter you send them; retaining a copy for your records. Assemble a file folder with all the pertinent records of your transactions with them (service contract, receipt of monies paid, billing statements, and of course your bank record copies of withdrawls).