UNPAID REFUND

I HAVE RECENTLY BEEN DOUBLE DEBITED ON THE 1ST OF JANUARY I HAVE SPOKEN TO NUMEROUS CALL CENTRE AGENTS WHO HAVE PROMISED TO RESOLVE THE ISSUE WITHIN 24 TO 48 HOURS IT HAS BEEN 15 DAYS NOBODY HAS ASSISTED I HAVE CALLED VODACOM ACCOUNTS DIVISION AND HAVE BEEN TOLD ALL THE REFUNDS HAVE BEEN MADE BUT THEY CANT EXPLAIN WHY MINE HASNT BEEN MADE THEY SAID I MUST GO DO A REVERSAL AND HOPEFULLY VODACOM WILL PAY FOR IT .MY POINT IS THAT IT WAS VODACOMS ERROR WHY MUST I DO THAT THEY REIMBURSED OTHER CUSTOMERS WHY HAVE I BEEN TOLD TO TAKE THIS ROUTE NOBODY IN THE CALL CENTRE KNOWS WHAT THEY ARE TALKING ABOUT THEY ONLY TELL ME THAT I SHOULD HAVE BEEN REFUNDED THEY CANT UNDERSTAND WHY IT HAS NOT BEEN SORTED OUT AS FOR THE ACCOUNTS DEPARTMENT THEY WERE OF NO HELP AT ALL THEY NEED TO SORT IT OUT OR I WILL TAKE LEGAL ACTION