Make sure to keep records of EVERY phone call and make sure to get the ID of every person you speak to if all you're doing is calling. I was given a lot of incorrect information which resulted in an overpayment when I briefly went back to work. This really hurt me when I had to get back on SSDI when I was unable to work again because they withheld all of my payments until the overpayment was satisfied.

I would suggest going into the office and talking to someone in person and getting records. IF they continue to pay you, make sure to not spend a dime of that money and to report the payments to them. Get a money order in the amount of the payments they sent to you and bring it to the local SSA office to find out how to pay them back.