OVERCHARGED ON MY BILL

MY TWO CONTRACTS WERE ENDING AT THE END OF OCTOBER. ONE WAS A S4 AND ONE A S4 MINI. I GET 5GIGS OF DATA ON BOTH THESE CONTRACTS. BECAUSE THE CONTRACTS WERE ENDING. I DECIDED TO UPGRADE ONE OF MY CONTRACTS. I WENT INTO THE TELKOM MOBILE STORE IN CITY VIEW MALL. A GUY BY THE NAME OF ZUNAID ASSISTED ME. I UPGRADED TO THE HUAWEI P8 WITH 99MIN AND 2GIGS OF DATA. BUT WHEN HE DID THE UPGRADE HE DID IT ON MY INCORRECT NUMBER. WHEN I WENT BACK TO THE STORE. HE SAID THAT HE WILL LOAD THE UPGRADE ON THE CORRECT NUMBER. WHICH HE DID. BUT WHEN I RECIEVED MY BILL FOR SEPTEMBER 2015 I WAS CHARGED FOR 2 HUAWEI P8'S AND MY OCTOBER BILL REFLECTS A MIGRATION PENALTY FOR R7500. WHEN I CALLED THE CALL CENTRE THEY TOLD ME MASHEGG FROM THE BILLING DEPARTMENT IS DEALING WITH THE CASE. THEY CONFIRMED THAT HE WILL CALL ME. BUT THERE IS NO COMMUCATION FROM TELKOM MOBILE. I CANNOT AFFORD TO BE OVER DEBITED FOR ONE MORE MONTH AND I WANT THIS ERROR RECTIFIED IMMEDIATLY AS THIS IS NOT MY FAULT. I TRIED THE WHOLE DAY TODAY TO GET THROUGH TO THE CITY VIEW MALL BRANCH BUT THE NUMBER DOES NOT GO THROUGH. I AM REALLY DISSAPPOINTED WITH THE SERVICE THAT I RECIEVED AND WOULD REALLY LIKE SOME ASSISTANCE ASAP.