Contract expired

I am not happy with the service I have received from CellC. <br> <br> I had a 24 month data contract with Cell C which ended on the 22nd March 2015 for a 2gig data plan at R98.99. I was debited R279.00 on the 27th March because these are out of contract prices. Cell C did not inform me that my contract was cancelled. I receive my invoices via email they could have sent me an email. Now I have to wait 30 days before I can cancel even though they explicitly stated on the calls with Julia and Siphesihle. I want this contract cancelled and I want my refund of R179. I did not sign off on the additional amount or extended timeframe of the contract. CellC you are prejudicing your customers and unfairly deducting money from their accounts. I hope that people are aware of this and customers do not take on contracts with you if this is how you treat your customers besides that your data signal is bad and not once did I ever complain when I couldn't log on, I simple paid every month. I want the CEO's email address?<br> regards <br> <br> Merlyn