Vodacom are blatant ******

A year ago I was called from Vodacom to be offered a top up on my red contact to take care of a problem I had with data running out. I agreed to the top up contract for 24 months. This contract has been running for 18 months now. I've just discovered that they registered the contract on a number I've never owned and that I've been paying to top my account up but that's never once happened. The Vodacom call centre laugh at me and say I've lost close to 36 gig of data which I can never get back and that I can't get out of the contract. That's *****. That's Vodacom. Worse than our Government and typically run by Gupta ******.