Incorrect Pricing , Pricelock client

I am on pricelock since from March, September multichoice went and debited my account an increased debit order of R746. I tried calling pricelock and their line are unanswered. I spend over R200 of airtime waiting on their questions. Have prove of that I called the normal dstv call center ***, and I was promised a call in 48 hours. A week has passed and I haven't received any call from them, nor my refund. DSTV I want my money back including the money I spend calling your call centre, your service is ridiculous!!!I am paying consumer!!!