New York Sports Club [NYSC] review: service

This club has no body responsible, they kept charging my credit card in increasingly rate, and when I call for complaint either they don't pick up or say the manager is not here. I wanted to cancel my membership but they never did cancel it. I Need help to get red of this nightmare. People there are horrible, and not cooperative, and bad attitude, is there any way to speak to body responsible for this company?