Well, it's going to be an administrative process, and so there will likely be some sort of audit, and/or hearing at some later time.\
Until then, they will most likely continue to insist their records are correct, and you are in error, and at risk of penalties. The king can do no wrong, you know.
Good Luck, it sounds to me like it will eventually clear up, though at great time, expense and headache to you.
