mtn ignore all my emails,tweets, calls, complaints

I HAVE BEEN HAVING ISSUES WITH MTN FOR THE PAST YEAR.<br> THEY HAVE BEEN CHARGING ME EXTRA R50.00 PER MONTH FOR THE PAST 16-18 MONTHS.<br> I WAS CORRECTLY CHARGED FOR 6 MONTHS ONLY ON THIS CONTRACT AND THE REMAINDER OF THE TERM I HAVE BEEN GETTING ****** FROM MTN.<br> NOW MY CONTRACT IS AT THE END OF THE TERM AND I WANT MY REFUND.<br> I REFUSED TO PAY AS I WANTED MY REFUND BUT NOBODY BUT A GLADYS AT YOUR CALL CENTRE UNDERSTOOD ME AND SHE LOGGED AN ENQUIRY ON THE 24TH OF MARCH.<br> TO DATE NO FEEDBACK.<br> ON TUESDAY THE 07TH OF APRIL MY LINE WAS CUT AS MTN SAYS I DIDN'T PAY MY BILL AND I NEEDED TO PAY R400.00 TO GET MY LINE REACTIVATED.<br> I PAID THAT AND SENT PROOF AND 3 DAYS LATER MY LINE IS NOT YET REACTIVATED.<br> I SEND EMAILS, TWEETS AND TRY CALLING BUT DO NOT GET THROUGH.<br> TODAY I GET A MAIL TO SAY THAT I SHOULD PAY A FURTHER R661.36 TO HAVE THIS LINE REACTIVATED.<br> SEEMS LIKE MTN DOES NOT HAVE A CLUE ON CUSTOMER SERVICE AND DO NOT WISH TO REFUND ME, NOR DO THEY WANT TO ACTIVATE MY LINE.<br> IT HAS BEEN THREE CONSECUTIVE DAYS NOW THAT MY LINE HAS BEEN DEACTIVATED.<br> I SHOULD BE A DIFFICULT CLIENT AND ASK TO BE CHARGED PRO RATA FOR THE 3 DAYS THAT MY PHONE DIDNT WORK.