I filed chapter 13 and paid if off. My car company was paid blue book price they have now added a ad

THIS COMPANY WAS MY CAR LOAN I PAID THE BLUE BOOK PRICE IN MY FILING THEY THEN ADDED THE DIFFENCE BETWEEN WHAT WAS PAID AND WHAT THEY WANTED IT LISTED AS A UNSECURE LOAN PLEASE ADVISE

I filed chapter 13 and paid if off. My car company was paid blue book price they have now added a additional?

If this was accepted under your chapter 13 plan, then tell your lawyer and your trustee. The lawyer is just fyi, but the trustee will put the hurt on them.