7 years but they Dont care

I have been a Cell C customer for over 7 years. I have opened tickets to get someone to come to my area and survey the site. But instead the network engineers are too damn lazy to do any work They tried calling ONCE and they immediately closed the call. My service is so bad that if I call cell c directly I can't even open a ticket as my calls cut. Half the time I'm on emergency calls only. I have a contract that goes usually to around R700 a month. That is ONLY data. Yet I am paying for a service I can hardly use. This is clearly in breach of contract. I have made few attempts and gave cell c enough reason to try and convince me to stay with them. I will be cancelling this contract and moving over to a new service provider. If cell c can fix this issue. Then perhaps they can work on convincing me to stay with them. But until then I'm getting ready to move on.