exploited

Hi my name is sthabile I join last year 13April there was a promotion you join for R150 and pay R280pm the contract was for 12months initial contract.I was never given my gym bag,i went the for my copy of the contract was told the sale rep that help me join nologer worked there.I have never gym there cause am tie between school and work I dont have time and cant cancel my membership.My problem is my contract should be ending 13April next month but am being told it ending next year but I only join for 12months.How can an initial contract be for 24 months dont think it legal.I wont be able to pay for the other 12months I didnt sign up for!!!<br>