If you feel your a victim of identity theft first thing you should do is contact the various credit bureaus and put a credit freeze on your SSN.
TransUnion: 1-800-680-7289; http://www.transunion.com; Fraud Victim Assistance Division, P.O. Box 6790, Fullerton, CA 92834-6790
Equifax: 1-800-525-6285; http://www.equifax.com; P.O. Box 740241, Atlanta, GA 30374-0241
Experian: 1-888-EXPERIAN (397-3742); http://www.experian.com; P.O. Box 9554, Allen, TX 75013
Go to this website to further educate yourself on how to protect yourself and actions to take that may help: