Lack of Service - Accounts Nightmare!

Having just signed a 24month contract for an Explora and having followed all instructions to a tee, Multichoice accounts just can't get it right. I am billed R844.00 for the PVR which I stopped and then billed R1035.00 for the Explora of which the deal price is R899.00pm! As a loyal customer I call to resolve the matter not once or twice but thrice! I have yet to receive feedback from the Agents who promised to escalate the matter and to call me back. I have now stopped the debit order and paid manually to get my account rectified. I know there is a self service option for DSTV but this is ridiculous!