Incorrect information not wanting give refund

My contract expired end of July 2015. In July i went to Cell C to find out what contract are available and i could not decide on one as they all where more expensive for less advantages. Cell C coverage is also very bad so wasn't sure if i was going to go back to Cell C. I asked them what would happen if i don't chose a new contract and i was told it would carry on on a month to month basis. ( Little did i know that the contract will be changed to a voice only contract without any data where i used to get 1Gb of data)<br> <br> I decided to carry on on a month to month basis until i decided what contract i want. Last weekend i noticed that i got an sms to say i only have R20 left to spend on my contact and did some digging and noticed that i did not get any Data this month and that im being charged out of bundle rates. <br> <br> After 3 angry telephone calls to Cell C because they keep putting me on hold and dropping the call. I realized that the best bet would be to purchase a 1Gb data bundle so that all is back to normal.<br> <br> I sent an email for the money to be refunded for the out of bundle data and was told to speak to the Cell C store helpdesk to get the proof. Once again.. Wrong information..