Vodacom is full of #***@!

I have called Vodacom 3 months ago to cancel my contract with them and move to prepaid, and they processed the request. A month later I got a statement showing that I am now on a different contract which is not what I asked for. I had to phone again and the consultant helped me and we cancelled and reimbursed the funds. Now a month later, I get a statement again showing that the contract is still ongoing and I owe them money. They also listed me as a non payer for last month on my ITC. This is disgusting service and I am hereby using this opportunity to frame my frustration with them!!