STOP debiting my account !!!

I was contacted in January, with misleading promo that was for 1 month, but ended up being subscription with them. When i asked the consultant about a contract being send to me,he said i will only be a member once i have signed it, then i will be a member or get the promo. It ended up being welcome letter as a membership. I called the next day and immediately canceled, consultant that help said she listen to the call and said the t/c was explain to me (Apparently). I just told her i want to cancel membership now !!! then she said i need pay a cancellation fee ... like seriously now, i didn't even make use of the service yet!!! February came and they deducted their cancellation fee. But then next month after that they again deducted, i call again, the consultant that help said she wanna offer a lesser contract for me. i said No... i paid your cancellation fee, just stop debiting my account! April again deducted money! i mailed them on ********** no one got back to me. I tried calling ever since then, i can't get through!!! I reverse the payment at my bank twice, block the refs number, but they use a different refs number every month(by changing the last 3 or 2 digits) and now they got clever and split the debit order in 2 ... R200 beginning of the month and then again the end... what hell man!!! IT is SEPTEMBER now stop deducting money from my account, I paid your darn cancellation fee, which is really ********* by the way !!!