Misled

I am ready to take legal action at this point. In August I received 1 of many calls to upgrade my cellphone contract. I had declined all previous offers because it was out of my budget of R200. Speaking to this consultant she informed me that the contract would be R199 +my insurance which she was no sure of the amount. She proceeded with her it's & c's and I kept stopping her and asking questions along the way. I stopped her when she reached Pro Rata and asked her to explain and give me an estimated of how much that would be, she was unable to so I said she should call someone who is capable of explaining. She called her supervisor Shaun who explained and gave me an estimate of R199 + R16+- so on the 25th September I would be estimated to pay round about R216 and 25th October round about R230. Nearing the 25th September I received an sms stating that I would be debited R387.41 way over my budget. So I called Shaun and ask him what was going on he needs to adjust this because I cannot afford this this is not what I agreed to. He said he would get back to me. Days passed no feedback. I called again numerous times unable to get hold of Shaun. Left numerous messages until I received a call on Wednesday the 18th of September and he explained that he would investigate and give me a call by Friday the latest & make the adjustment accordingly. He did not get back to me I called numerous times again on Monday until Tuesday the debit went off. I have been calling ever since to speak to Shaun and no response till this day. I am terribly disappointed and feel de*****ed by Cell C. And they are refusing to cancel my contract on the grounds that I was misled.