NO CALL BACKS TO SORT OUT BILLING ISSUE

I have called into DSTV more than 10 times to sort out my billing issue. DSTV incorrectly under charged me for my 12 month subscription but now aren't sorting it out and keep cutting my services. Every time I call in to resolve the issue and reconnect me, they charge me. No one can put me through to accounts as they "have to call me back". NO ONE HAS CALLED ME SINCE MY FIRST COMPLIANT. This is beyond annoying and the fact that DSTV never has anything to watch when we pay almost R1000 per month! SORT IT OUT DSTV!!