NO CALL BACKS TO SORT OUT BILLING ISSUE

I AM SICK AND TIRED OF EMAILING AND CALLING AND GETTING NO WHERE! DSTV IS ROBBING THEIR CUSTOMERS AND SOMETHING NEEDS TO BE DONE ABOUT IT. I PAID FOR AN ANNUAL SUBSCRIPTION AND NOW 6 MONTHS LATER GET TOLD THEY DEBITED ME THE INCORRECT AMOUNT AND TRY TO DEBIT ME WITHIN MY 12 MONTH PERIOD. THAT IS NOT MY PROBLEM AND DSTV NEEDS TO TAKE OWNERSHIP OF THEIR MISTAKES. I NOW HAVE NO DSTV AND EVERY TIME I CALL TO SORT IT OUT I AM TOLD THEY CANNOT HELP AND ACCOUNTS / BILLING WILL CALL ME, SUPRISE SUPRISE NOT ONE CALL 3 MONTHS LATER????? SO I WONDER, WHEN WILL THIS GET SORTED OUT AND WHEN WILL MY DSTV BE ACTIVATED AGAIN??????