Manager and rep not getting back to client

I was told that I could sign up for gym,this rep who did so did not specify that it would be a 24 month contract let alone a CONTRACT in itself! I was told that I could pay this membership cash so him taking my banking details I thought was protocol. When money was deducted from my bank account on the 1st of December I approached the rep and asked him to either freeze or cancel my membership as I had a 5 day period in which to do so after the signing up,nothing was done about it and then I tried contacting the manager and everytime I did so she was never available,she emailed me and I responded and after a few emails she stopped replying,I then sent her another email only to find out that she is no longer working at this branch,I have tried many times to get into contact with whatever manager and I was always told that she was not available. I called into the call centre and nothing became of that as I am still waiting on them to get back to me. I would like this sorted out and my membership cancelled immediately. False pretenses and people not getting back to me. I feel it is unacceptable!