poor communication with client & membership cancel

Helo Peter,<br> <br> Can you please advise, on February 2014 I joined the gym at Planetfiness in Centurion for 12 months and I paid upfront to avoid owing them, now February 2015 I was told that I owe the gym R619.50 because my account has auto renewed itself without my knowledge and I was not even notified about my contract continuing since I made sure that I pay full 12 months to avoid such issues, I called the customer service, explained my situation to them and they told me to pay that amount cause it is going to affect my credit reputation, and I asked for them to freeze it so that it wont incur any charges , the consultant told me they can only freeze it if I agree to pay that amount and I agreed that I'm going to pay, today I went to pay they told me I owe them R945.00, few days later they sent me a sms notifying me about my contract continuing. Kindly assist I need this to be cancelled I don't want to be the member anymore.