FAIL TO PROVIDE REFUND

I HAVE CONTACTED CELL C IN FEBRUARY 2015 TO CANCELL MY TWO ACCOUNTS WITH THEM AND A LADY BY THE NAME OF LEBOGANG KOMANE GAVE ME THE OUTSTANDING AMOUNTS OF R2454.10 FOR THE ONCE ACCOUNT AND R623.02 FOR THE OTHER ACCOUNT AS THIS ACCOUNTS WAS A EARLY CLOSE. SHE E-MAILED ME THE TWO AMOUNTS DUE FOR THE EARLY CLOSE AND SAID I SHOULD PAY IT INTO THE CELL C HEAD OFFICE ACCOUNT WHICH I DID. IN APRIL THEY DEBITED ME AGAIN FOR CELL PHONE ACCOUNTS FOR THE AMOUNT OF R545.15 WHICH I DISPUTED AND THEY SAID THEY WOULD COME BACK TO ME. AGAIN IN MAY THEY DEBITED ME AGAIN FOR TWO AMOUNTS WHICH WAS R60.17 AND R134.00 NOW I RECEIVE A MESSAGE TO SAY THAT THIS ACCOUNT DOES NOT HAVE A REFUND AND IT IS DEBITED CORRECTLY WHEN I ALREADY CLOSED THE ACCOUNT IN FEBRUARY. EVERY TIME WHEN I CALL THE CALL CENTRE THEY GIVE ATTITUDE WHEN YOU WANT TO GIVE THEM YOU REFERENCE NUMBER. I DO NT UNDERSTAND WHY THEY DO NT WANT TO CREDIT ME AS I DO NT OWE THEM ANYTHING. AND THEY DO NT EVEN HAVE THE DECENCY TO CONTACT YOU TO TELL YOU.