Debit order

I just received a message stating that DSTV has interrupted my viewing and I need to pay an oustanding amount. I have changed my bank and I called DSTV last month to ask them to change my banking details and have a debit order every month from the new account so the person I spoke to told me it has been done and they will do a debit order on 01/11/2015 which clearly has not been done, now i called them again and was told the banking details are loaded but is now a cash deposit and not a debit order and that they need to verify the details before activating a debit order in the meantime I must pay the outstanding amount in cash, why must i do this now I am not the one thats *********** or giving false info to their customers, in any case we paying them to watch the same ******** over and over again. Waste of time and money!!!!!!