Body Lab review: This gym has deceived me

Im Nontobeko Mthimkhulu in 2017 April they had said im signing a free trial contract and if I like the gym I will give them a go ahead into becoming a member. I never went to the gym after that trial due to time. After that I got a messages says I am a member I told them to cancel they didnt and they told me stories.
This year they have been contacting me about the contract that I owe them and im in areas im blacklisted. I told them I didnt give them a go ahead into becoming a member in their gym... they said I signed a contract with my details. I must pay and the contract renew itself. Im not working please help me. I have never gym with them. Thank you. Email [protected]@gmail.com.