DSTV Price-lock

I have been struggling with DSTV for at least 2 years now with incorrect billing. I had a price-lock package but still i was debited with a massively high amount it got so bad that i had to pay cash as they would just debit any amount they pleased when i phone the never can explain why it is so high some months the amount was more than a R1000.00 more than the price-lock amount for no reason. My price-lock expired 31 July 2020 and i requested that the price-lock team phone me but nobody ever phones me now i'm receiving massive amounts to pay which range from R1000.00 - R2000.00 and NONE of their packages are that high so they must please explain how that is possible or i will be taking them to court. But their *********** call center agents that just keep telling you to pay the amount they will correct the error but nothing happens then each end of the month you still receive an incorrect bill then they get upset when you speak to them and try to explain the problem you have are experiencing is also a clear indication that they have no idea what is going on in there business i would like DSTV to please phone me and sort their stuff out