Extremely poor customer service

I had joined gym company in Johannesburg under the guise that should I want to cancel, I can do so at any time with no problems, unfortunately I was wrong. When I went to cancel my gym membership I was told I had to pay a cancellation fee of R1400 which I was not told about prior to me signing the contract. Before signing I had specifically asked the sales consultant/trainer Rodney if I want to cancel I could do so with no fee, he said yes, I asked him again after signing, again he said yes. Upon finding out about the cancellation fee I confronted him and was promised everything would be sorted out and there would be no problem, a month later I am still stuck with the same problem, a gym membership I cannot afford to pay for and cannot afford to escape either. Not to mention the sales consultants were extremely unprofessional and flirting, inappropriately touching and asking inappropriate questions. This is the worst gym experience I have ever had and I warn everyone not to repeat my mistakes