Stuck in a contract

I was ******* by the sales people from Gym Company Maponya mall that they are running a free 1 month promotion to join the Gym , and I was ******* into signing the contract not knowing that I’m actually signing to be a member, I tried canceling my membership several times but they don’t want to and now it’s affecting my credit score , GYMCOMPANY ,Maponya mall they are very aware of what’s happening that people are being ******* to join the gym