Contract cancellation

I am writing this complaint cause I am extremely unhappy with virgin Active! On the 11th of June I was at the KZNDHC conference in Durban,a lady from Virgin active offered to sign me up for the gym.I gave her my details as she requested cause I honestly did want to join a gym sooner or later. The details she put in a book and also asked for my signature as well as my account number cause apparently that's how all payments are accepted.The following week I was advised by my manager that I must work on getting an accommodation in mar gate or matatiele as i will be relocating there as my job involves a lot of travelling.I phoned Virgin Active and informed them about this the week after I was told i m relocating. They told me i cant cancel the contract I must pay 40% of R9000 some change.According to them I had 5 working days to cancel the contract after I signed for it. First of all I had no idea I was signing a contract and no terms and condition or contract copy was given to me. So how can I know what to follow?Money has been deducted on my account today and I m not happy.The lady who signed me up hasn't phoned me in almost 2 weeks after she said she is sorting it out!