Pennsylvania Higher Education Assistance Agency
The Office of Consumer Advocacy
1200 North 7th Street
Harrisburg, PA 17102
Start there. Navient has a similar department and while I have not been successful with them for my private loans, they are much more streamlined and about 25% less inept that the rest of the organziation, lol.
I got this right from the FedLoan website and they also have an 800-number listed.