Employment Law Questions? Ask an Employment Lawyer.
Unfortunately, your recourse is through the EEOC or the state level agency. Until you have gone through one of those entities, there is no way to sue or use any other method of litigation. You should next look into contacting the North Carolina Human Rights Commission. Often the state level of the agencies is less busy and more responsive to employee complaints than is the federal level.
Regardless, there is simply no other means of seeking justice in these situations. You have to obtain a right to sue letter from one of the two entities before you can use any other forum.