CANCELLED ACCOUNT - STILL GETTING BILLED

I WENT IN TO THE CLAREMONT BRANCH IN THE BEGINNING OF MARCH TO CANCEL MY TELKOM SUBSCRIPTION (EVENING W/ENDER PLAN DSL FASTER) THEY ASSURED ME THAT IT WOULD BE CANCELLED AT THE END OF MARCH AS I MOVED TO A NEW RESIDENCE. THEY SAID I WOULD RECEIVE A SMS TO SAY THAT IT WAS CANCELLED WITH A REFERENCE NUMBER. I WAITED TILL MID OF MARCH AND STILL DID NOT RECEIVE AN SMS, I THEN PHONED TELKOM AND THEY ASSURED ME THAT IF WOULD BE CANCELLED AT THE END OF THE MONTH. AT THE END OF MARCH I PAYED MY ACCOUNT AND I MADE SURE THERE WERE NO OUTSTANDING PAYMENTS FROM MY SIDE. I GOT AN SMS FROM TELKOM WHICH SAID THE WERE SAD TO SEE ME LEAVE, I TOOK THAT AS CONFIRMATION THAT MY SUBSCRIPTION IS CANCELLED. WHEN THE NEW RESIDENTS MOVED IN THEY CONTACTED TELKOM TO OPEN AN ACCOUNT AND GET A DSL LINE, I TOLD THEM THAT MY ACCOUNT WAS STOPPED AND THAT THEY WOULD NEED TO OPEN A NEW ONE. THEY WERE THEN TOLD THAT THE LINE WAS STILL IN MY NAME AND THAT I WOULD NEED TO GO IN TO TELKOM TO TRANSFER IT TO HIS NAME. THEY THEN LATER SAID TO HIM THAT IT HAS BEEN CANCELLED OFF MY NAME AND THAT HE NEEDS A NEW ACCOUNT. TODAY THEY BILLED ME FOR APRIL!!!!! EVEN THOUGH MY ACCOUNT WAS CANCELLED AT THE END OF MARCH!