Bad Service

I have been experiencing network connectivity issues for more than two months. Initially I was told that Cell C is switching to the Vodacom platform. For the first two weeks I was ok and thought it is just the transition process. I do not have data connectivity at any random time. It is quite an incovenience and frustration as I cannot send or receive mails or whatsapps. I have logged the issue several times with a list of reference numbers. I will really appreciate it if someone with power can resolve this matter. I'm basically paying for a contract that is of no use to me at the moment. I also requested a refund for a the times my phone is not working.