Gym complain

I was stopped by a guy at Germiston to convince me to join the Body Lab Gym.I ended up joining I wasn't working and the monthly fee was reasonable and was promised a job so trusted that paying it won't be a struggle, unfortunately I didn't get the job struggled to pay in the next 3 months went to cancel they told me that I signed a 3 year contract, and should finish it and as we speak I'm on credit Bureau I can't afford to take anything in my name up to now please intervene on my behalf