Taking money without authorisation

I paid a penalty to cancel my DSTV contract in Dec 2016. I even called in to confirm that they have received my penalty paid and that my contract was cancelled. Subsequently I have debt collecting companies call me non-stop. I have called to try sort this out plenty times. They have even gone as far as to attempt to do a debit order from my account of more than R 5000 without my authority!!!This is ridiculous and I waste 30 minutes on the phone every time and nothing gets done. It is on your recorded lines that it was confirmed that my cancellation is sorted out!!!!!I am now on the line with a lady with the name Daisy and she really is not great at sorting this out. Multichoice is pathetic and I will take you to the consumer commission!