PATHETIC BAD CUSTOMER SERVICE AND MISS INFORMATION GIVEN

I am utterly disgusted with the service i have receive from zone fitness. I was given miss information from the company itself. I signed up for a gym contract and was told first month free if i wish to cancel before 21 days i can. Now they turn around and say i need to pay 10% cancel fee for 24 months if i wish to cancel. This is not my problem i was told before 21 days i can cancel with no cancel fee. This is pathetic customer service. I am so upset and i wish to take this further. If miss information was given to me its their responsibility to fix it and cancel my contracts . Instead they turn around and tell me what their company policy states BUT THIS HAVE NO BEEN ADVISED TO ME. How to i take this further because they about to deduct money from my account and I want my accounts to be cancel.