Virgin active is trying to rob me

I am dissapointed all I'm trying to do is lose weight but, the stress of this experience will make me lose weight faster than working out at this gym. In January I signed up, they offered me a January special, 3 months premium then back to standard R390. Every month they deduct R1500, I reverse payment pay at the branch then I dnt have access inside etc. My membership is blocked and their explanation is, you not the only one, this will be a long fight what!? It's a scheme, I wish I never joined! Customer service calling me like debt collectors it's appaling