Cancelled contract still billed 12 months later

I cannot believe this has happened more than a year later. <br> Today I got a call from Vodacom asking if I would like to upgrade my data contract. WHAT??? Is this possible. This contract was never used as there was no signal in my area two years ago. After numerous emails last year and phone calls this contract was supposed to have been cancelled as well as me refunded. However, one year after apparently cancelling my contract I am still been debited. What makes it worse is now in my area the signal is better so last week I went into the shop to get a new data contract. They didn't even inform me that it was not cancelled!!!<br> <br> I am furious!! I was supposed to be refunded for two years ago and now I find you are still debiting my account, I am outraged and utterly disgraced!!!!<br>