Cell C Poor Service and Customer support

Booked in my faulty handset in at the Cell C Centurion on 6 Jan for repair cost. On 9 Jan received notification from Cell C repair centre with ref No:(CLC***) with repair cost and that I have to contact the service centre to accept or reject the costs. contact them since 9 Jan with absolutely no result, the call centre transfer the call to the service centre and then the agonising Cell C music will play for 20min then call is dropped, I went back on 19 Jan to the centurion franchise, they called the service centre no result then I left my details in order for them to contact me back still waiting? still calling daily trying to get hold of the service Centre, Call Centre provide direct No: for service centre (***) both the No's not in service Who would though, It is 28 Jan and to date I've spoken to over a dozen people. I requested to speak to their mangers to escalate the problem, managers are never available, promised that they will return my calls still waiting, I'm no longer asking for service I demand service from Cell C as I am a paying customer the services are ********** to say the least, keep it up Cell C there are four other operators to choose from