Zone fitness is a ****

Some time last year, I was approached by a Zone Fitness agent at the mall and at the time, we agreed on a 6 month's contract. A week later I contacted their offices to cancel as it was stated that I had 7 days to cancel without any charges. I was surprised when I was contacted by a Nolu to pay R789 for the remainder of the 24 month contracts I know nothing about. I am now in a 5k debt with them because I refused to pay something I have never even used and they are ruining my credit score, imagine paying R5 000 for something you ever used. I highly do not recommend them to anyone.