Cancellation round about.

I had a WIFI contract set up with Vodacom. I physically went into Vodacom Woodlands Boulevard store to cancel my contract in February already. The employee informed me that I would have to pay one more months payment and that the cancellation was complete. It is September and I was debited a few months after what I was supposed to pay. Vodacom has now handed my cancellation over to PreLegal and refuses to cancel my contract fully until I pay another months fee. When phoning Vodacom's cancellation's number, I got put through to Pre Legal who then referred me back to Cancellations and then to Collections. The man at collections was unacceptably rude and had no patience at all to handle my situation. He wanted to refer me back to cancellations. Left with no help at all and still not knowing how to cancel my contract, I am fed up and refuse to pay Vodacom money any further until Vodacom sorts out this issue that is long overdue. Matter of fact, Vodacom owes me and should refund me for the extra few months payments that they debited my account with long after my contract was cancelled. Unacceptable service!