I filed my I-458 back in June with TSC, and it was erroneously rejected, they cited the fact that my priority date wasn't current, when in fact, it was, according to the June Bulletin. I refiled on July 5, and as of today, Aug 3, I still haven't heard anything. They also have not cashed my check, either.
Is this the problem you are having as well? When did you file your I-485? Have they cashed your check yet?