********** Debit Order

I, I hav a dstv account for years now, and I've been making cash payments ever since I opened the account. Last month a guy called me saying that my account was chosen and was entered in a competition to win a car, all I have to do to accept this I must load a debit order, i wasn't convinced up until he said that i won't pay R385 my instalment will remain at R365 then I agreed to load a debit order. After 30 mins after our conversation I received another call from a lady, she wanted to confirm if i agreed to the dbit order, i told her the conditions in which i agreed to load a debit order, she told me that i will pay R385 then i told her that i was **** to, therefore my debit order must be cancelled, she promised to cancel it and hand over my case to the manager. Last month the debit order went through for R0,99c and i reversed it but today i still see a debit order going through my account. I dont knw why am i forced to have a debit order. I don't want it and was **** to by both consultants and their manager, I dont owe dstv, and i will cancel it. R385 is too much for repeats, and a ********** debit order on top of that is too much.