MTN DATA SIM ON CALL

I BOUGHT DATA SIM CARD TELEPHONICALLY AT PRICE OF R100 AND THE FIRST DEDUCTION WAS IN JANUARY AND THE SIM ONLY WORKED LESS THAN A WEEK, BUT THEY DEDUCTED OVER R501 AND FOLLOWING MONTH R268.

I WENT TO MTN VAAL MALL TO GET ASSISTED I WAS TOLD TO CALL CUSTOMER SERVICE WHICH I DID AND MY CALL WAS DROPPED I KEPT TRYING TILL NOW I HAVENT RECEIVED HELP.

I WENT TO MTN VEREENIGING THEY TOLD ME THEY CAN'T HELP AND I NEED TO CANCEL THE SUBSCRIPTION WITH IMMEDIATE EFFECT AND GET MY REFUND.