Vodacom being Vodacom---it hurts

I had a double deal contract with Vodacom. The contract end date was end August. To my surprise, I receive a call from one of the telemarketers for Vodacom, to discover that I have to call Vodacom as I still had a deal open with them and asked if I wanted to upgrade. I told them I'm done, she said no I still need to cancel on my end. Anyway I called Vodacom to find they have a deal of R3 for the one sim, don't know for what and for the other sim there is a deal they can't cancel as it hasn't reached it's maturity date. I am fuming right now, I never had or agreed to other deals. I want this cancelled. Already was it a pain cos I was paying for this contract even though the phones was ****** now I have to deal with this. Vodacom confirmed on an earlier review that the contract was cancelled, Yesterday they debited my account again.