Being debited for DPP which I do not have

Multichoice has been debiting my account since October 2015 for a DPP account which I CANCELLED in October 2915 because of horrible customer service. I did not even receive the Explorer because I received a call from Multichoice confirming the cancellation yet Multichoice has been debiting my account by R878. I ended up buying an Explorer from Dion Wired which means I pay R779 p/m. I have been waiting for a call for the past WEEK from Multichoice - DPP so they can cancel DPP once again !!!!! Multichoice owes me money for the debit orders for the last 3 months. They were unsuccessful but my bank charged me R138 every month for each debit order which I did not give Multichoice permission to debit because I cancelled my DPP account and I pay R779 via the DSTV app every month !!!