Bad bad bad gym

Last year I went to the gym to accompany my friends to sign the contract so I was also forced to join they said I will be on a black tag what what so my friend will pay on my behalf soo I decided to give my friend 150 every months soo in total we had to pay 250 per months for 1 year .Soo last year in October we went to gym to a ask them how much we are owing they also checked my account they said I owe nothing because my friend pays on my behalf in December I received a call from Landau saying I’m owing the gym so I need to pay the amount I’m owing .i paid the money in two months December and January. I received a call again from Landau saying I’m owing the gym 1000 something on the other side gym is deducting my money I do not know for what reason because I sign a 12months contract. I cannot afford the gym as I am a student soo please if you have added some months on my contract which I know nothing about please cancel it plus I only attended your gym for one months