Incorrect debiting for 3 months

On the 10/05/2015 I purchased an explorer and had it connected the same day. My PVR was moved into my bedroom and was connected as the secondary decoder with my explorer as the primary decoder with extra view. On the 02/06/2015 my account was debited for R2181.20. When I enquired I was informed that I was being debited for 2 separate decoders and that my account will be credited with R779.Then on the 02/07/2015 I was debited once again for R776.90. After numerous calls and excuses I was told they would journal a refund to my bank for that amount. Which annoyingly was done. To my horror I was debited again today 03/08/2015 for an amount of R410. I have been a loyal client for more than 5 years and I am furious at this low level of service from Multichoice. I will be cancelling my subscription if this is not sorted out within 48 hours. I am know being owed R1186.97 which needs to be refunded to my personal bank account and NOT credited to the dstv account. I want answers - no one calls with feedback or anything,