Cancellation of contract

Hi there. <br> <br> Hi there. <br> <br> I was sold for a phone by one of the Cell C consultants telephonically. I accepted the offer though it turned out to be a something I never would enjoy using in aspace of at least two months now. The guy that sold me the phone assured me that the phone was interstin but I dont like it. My air time doesnt last long enough but on My first statement I saw the bill with a very different amount I signed for on my contract. When I contacted cell c they told me I cant terminate the contract. But I really cant understand why because I don't like this product. <br> <br> Can I have my contract cancelled please.