WRONG AIRTIME GIVEN

I WAS AT THE SHOP AT 9:38 THIS MORNING BOUGHT A FEW GOOD AND INSTRUCTED THE CASHIER I WANT TELKOM MOBILE AIRTIME FOR r10 HEE SAID THEY DONT HAVE IT SSTARTS FROM r20 I TOLD HER YES THTS FINE, SHE ASKED IF ITS FOR A LANDLINE OR CELL PHONE I SAID CELL PHONE N STILL INSTRUCTED N SHOWED HER MY CELL PHONE TO MY SURPRISE WHEN I GOT TO WORK IT COULDNT GO IN..I CALLED CUSTOMER CARE ONLY TO BE TOLD ITS A WRONG VOUCHER AND NOT FOR A CELL PHONE..NOT ONLY DID WASTE MY TIME BUT THE CASHIER OBVIOUSLY DOESN'T KNOW THE DIFFERENCE AND NEED INTENSEE TRAINING..WHAT AM I GOING TO DO WITH THIS AS I DON'T EVEN HAVE A LAND LINE.. CAN THE STORE MANAGER CALL ME BACK ASAP AS I WANT MY CORRECT AIRTIME LOADED TO MY NUMBER TODAY.