Cancelled contract, but they keep billing me.

I cancelled one of my vodacom contracts end of October 2015. The number was disconnected on the 1 December 2015. I put the phone away in storage untill 5 January 2016. When i switched on the phone the contract was active. I went to the vodashop in Fochville who told me the number does not even appear under my bill, they refuse to print me a statement to verify the contract did not go off my account. I phoned vodacom customer care, who where not helpful in any way. I was transferred between consultants and yet no one want to solve the problem. The cell contract in question is ***.