Cell C has gone Deaf?

Our internet has been working on and off for the last 4 Months. We have a contract with Cell C (SADB) Been calling everyday... and they promise to come out and look, (to test the problem) we are still waiting. Yet we are disconnected on a daily basis. we are trying to run a business here but cell c is making it VERY difficult. they are very sorry over the phone and it is not the customer services caller fault! NOTHING gets done. what seems to be the real problem here?? no one knows. Should i rather switch providers ? i am happy to pay more for a working network. It is more than frustrating to sit with with the same problem on a daily basis. Is this complaint going to be heard. Where is the right link to complain can anyone direct me to an ear that can hear me?

Regards Desperately disconnected