R330 SERVICE FEE

MY IPHONE 4S STOPPED WORKING ON THE 29TH JAN 2016 WHILE I WAS IN DURBAN FOR A WEEKEND,UPON COMING BACK I TOOK THE PHONE IN TO BE CHECKED AT MTN MAPONYA MALL ON THE 3RD OF FEB AND I WAS TOLD THAT THERES A SERVICE FEE OF R330 THAT I HAVE TO PAY IF IT IS FOUND THAT THE FIND MY IPHONE IS ACTIVE,ON THE SAME I WENT TO ICLOUD WEBSITE AND DEACTIVATED FIND MY IPHONE,AND MY PHONE WAS BOOKED FOR SERVICE AND I WAS TOLD THERES A TURN AROUND TIME OF 3WEEKS,LAST FRIADY I RECEIVED THIS SMS \dear customer.imei no ***.jobcard no***3 quote rejected,beyond repair/warranty voided/no fault found.device return pending payment of service charge off R330\" I call them to find out exactly what does this mean and the call centre agent told me that my phone was not even checked cause the find my iphone was active I must pay the R330 IN ORDER FOR ME TO GET MY PHONE BACK AND HAVE IT REBOOKED,I WENT TO ICLOUND TO DOUBLE CHECK AND FOUND THAT THE DEVICE WAS DEACTIVATED AND I CALLED AGAIN AND THE CALL CENTRE LADY WHO WAS VERY RUDE CONFIRMED FROM HER SIDE THAT IT WAS DEACTIVATED BUT STILL INSISTED THAT I MUST PAY THE R330 WHICH I DONT THINK IS FAIR CAUSE FROM MY SIDE I HAVE DONE EVERYTHING RIGHT,PLS H"