DStv Debit Error and terrible service

DStv debited monies from my bank account after I cancelled my contract over a year ago. When I phoned DStv to find out why my account was debited they could at first not tell me. I hold the line for 30 minutes and then my call got dropped. I phoned back again and only after 15 minutes could they tell me that the debit order was an error on their side. The agent told me that the debit order will be reversed and again put me on hold. I asked for them to call me back but they indicated they are not able to call back. I held the line and was then informed to call back and cancel my DStv subscription once the debit order was reversed. First of all they take my money by mistake and I have to spend an our on the phone to sort it out. Then I need to wait a couple of days to get my money back which I do not have. Then I get told to phone back in a couple of days to cancel my subscription which I cancelled more than a year ago. When I wanted to speak to a manager I again hold the line for ages with no one answering? Come on DStv what are you doing here??? Never again going to subscribe to DStv