Stopped contract, still debit funds, not calling me back and now phone me for an upgrade

So..

Vodacom phoned me with a deal of a new data contract, i was advised that my current data contract is out of its contract date and is on a month to month now. I took the new deal which could not be loaded onto the old contract and had to be a fresh contract and phone customer care to cancel my old contract which is out of its contract date.

The following month the fee of the old contract went off of my account again, so i phoned them to see what is going on, i was advised that they will call me back.. never happened. i phoned again to query and was advised they will call me back, never happened.

I got an SMS to rate their service and i gave them the lowest score possible to get some attention from them and still no one called me back!

Today i got a call from Vodacom, almost got excited that they are eventually phoning me back.. only to let me know my data contract WHICH I AM TRYING TO CANCEL FOR TWO MONTHS NOW are due for an upgrade.. really vodacom ***?