Still debited for a cancelled deal

I was in contact with Claudette from Elite mobile and she promised to sort this issue out. It's over two months now and nothing seems to have been done. She asked me to send her an invoice from vodacom which I did, and I never heard for over a month from them, and yet they are still taking money from my account.<br> My deal was cancelled in January with them, it's April now. What do I have to do to stop this nonsense from going on?