Hey do not open a new account to pay these people.
by US laws they must accept any form of payment for any debt. but I suggest no cash payments.
Make a contract agreement in writting as to the payment amounts for them. But before you do this I suggest a certified letter to them if you have not done so do a request for how much the origional loan was for, Any payments made, percentage rate charged on the loan, total amount due ,total roll over fees ect.
Don't over pay these people they will never refund any over amounts.