******* into opening an account

I was ******* by a consultant into opening an account. I explained I did not want one but the lady suggested I take a voucher instead, she took my details and a few months later I received calls and a letter from their lawyers stating that I owe an amount close to R10000. I have tried to contact both the gym and their lawyers with no luck. I cannot be expected to pay for something I did not ask for, let alone one that I did not know I was even signing up for. They are ****s, even their field marketers are trained to do the same.