pathetic service from multichoice and call centre

AFTER RECEIVING AN SMS STATING UNABLE TO VERIFY MY BANK DETAILS PLEASE MAKE A MANUAL PAYMENT IN MAY 2015, I MADE A PAYMENT AND THEN THEY DEBITED MY ACCOUNT SO A DOUBLE PAYMENT WAS MADE IN MAY AND I CALLED AND HAD A REQUESTED A REFUND WHICH THEY PROCESSED FROM THERE SIDE THEN AND ADVISED ALL IN ORDER THE DEBIT WILL GO OFF AS PER NORMAL IN JUNE. IN JUNE I WAS NOT AWARE THAT THE DEBIT DID NOT GO OFF AND ONLY WHEN MY SERVICES WAS DISCONNECTED CALLED THEM, THEY REACTIVATED AND SAID WILL DEBIT IN 24 HOURS WHICH AGAIN THEY NEVER DID. THEY AFTER A WEEK THEY DISCONNECTED MY SERVICES AGAIN I CALLED IN AND SPOKE TO A SUPERVISOR ON THE 17/06/2015 AS THE CALL CENTRE AGENT COULDN'T HELP ME AND HE CONFIRMED MY BANKING DETAILS AGAIN THIS WAS NOW FOR THE 3RD TIME IN 2 WEEKS I HAD TO GIVE BANKING DETAILS FOR AN ACCOUNT THEY WERE PREVIOUSLY DEBITTING AND SAID A DOUBLE DEBIT WILL GO OFF ON THE 27TH OF JUNE WHICH I AGREED TO. BUT ONCE AGAIN ON THE 20/06/2015 THEY DISCONNECT MY SERVICES. I CALLED IN AND GOT AN ARROGANT WOMAN ON THE OTHER SIDE OFF THE LINE WHO SCREAMS AT THE AND INSISTS I MUST GO AND MAKE A MANUAL PAYMENT NOW WHEN I REQUEST TO GO THROUGH TO SUPERVISOR CUTS ME OFF!!! PATHETIC SERVICE..