Cancellation refusal

I joined Flexi club on the 12th of December . i was in Durban and got approached by their promoters when i was at Shaka Marine running a competition which i had apparently won, uppon arriving at their offices to collect the price i was asked to first attend a presentation with Sihle who then presented the Flexi holiday club special to me, it sounded interesting and i joined, i paid a deposit of R9200 and the rest of the money was going to be debited from my account. Upon arriving in joburg i re-checked my budget and realised that i over committed myself, i sent Arvin an email of cancellation within 5 days, Sihle phoned me and assured me that she had a client who was going to rent out my points so that i could pay back the balance, the client was apparently going to pay me on the 25th of January as she was travelling to CPT in February for Valentine, i then sent an email to Arvin to say i am no longer cancelling. the month went by and i never received any money from sihle's client, every time i will call Sihle she will tell me stories, i then decided to send another email to cancel, Arvin responded to tell me that i couldn't cancel. their customer care is also tellimg me the same.