Incorrect billing

On the 28th of February I was bill R1227 (3 times the normally R409 I pay monthly), I reversed the transaction because it is not what I subscribed for. I tried numerous occasion to get the billing correct with no satisfactory answer. On the 9th of March they canceled their service and of today I'm owing multichoice R678 (R525 for balance brought forward and R153 for compact subscription). I called to find about the R525 even today I haven't received a correct billing and an explanation of why I was charged 3 times normal price. I have been using this service for 10 years. I must say their service in this regard was shockingly appalling.