Zone Fitness Dishonesty practices

Hi all, i join zone fitness club with good reason, inorder to fit and healthy,my gripe is that i couldn't often go to the gym because of work responsibilities,i went to Zone fitness, asking them to cancel my membership of wich i pay R400 a month,only to find out that its a 2 year contract, i was angry and surprised, because it wasn't stipulated at time i took up membership, so i ask any how whats the settlement amount, they told me that they will get back to me via email or via telephone,of which it never happened, only to find out that they handed me over to a debt collection attorney's.......Zone Fitness, they trick you to sign up with membership, and the don't disclosed about its a 24 month binding contract.