CELL C CONTRACT WOES

About 3 weeks ago a representative from Cell C contacted me and offered a data contract for 10GB daytime & 10GB night time data for R149.00 per month. I accepted and duly received my sim card on the 18th September. The first indication there was a problem was when I realised I'd have to change my number. I contacted Cell C on Monday 21st and they joined the data contract to my existing number. Then I found out I could not receive any calls. After contacting Cell C again they gave me the code to unblock the call problem. Then came the big problem - I was on a pre-paid system and now I can't buy airtime. On querying this, it turns out that I now need to buy a "bundle" or something like that which was going to cost me a further R100.00 per month. Last Friday I phoned Cell C again and they said I could migrate from an open line to a pre-paid line but that would take a couple of days for approval. Well it is now a week later and still nothing & I still can't make calls. I want to cancel the contract as it is not what I wanted and I have been trying to call the Cell C Cancellations department (084143). Well - that is the cherry on the top. Waited 37 minutes the 1st time and the phone gets picked up and put down straight away. Phoned again and waited 27 minutes for a reply - nothing. I have phoned 4 times today and have yet to speak to anyone. Granted - I did get a phone call last night at 18h54 from Customer Service but we were busy and I could not speak to anyone. Needless to say I m less than impressed with the Customer Service department at Cell C. All i want now is to cancel this contract and go back to a prepaid system where I can buy data and airtime as and when I need it