Dishonest sales & no gym facilities

I joined the Centurion gym in March this year mainly to make use of the swimming pool & was told a few weeks later that the gym is closing until August for a big revamp & we will be notified when we can return. I was very unhappy that I had not been told about this before signing up as the other gyms with pools are too far away for me so they agreed to freeze my membership until August when they re-open. I went to the premises mid-September & the building was nowhere near completed. I cannot join anywhere else as I will end up paying 2 contracts & I'm tired of waiting for them. In October I requested cancellation of the contract & was told that I have to pay over R3,500 to cancel early. This is unacceptable as they withheld vital information when I signed up & are now trying to keep me trapped in a contract they should not have signed in the first place.