Pathetic service from Cell C

I have been struggling for 4months now with Cell C to clear my name after they wrongly accused me of an outstanding amount on my account. If I phone several times just to hear I am not in arrears but they are not clearing my name at the debt collector CSS. I am spammed with Emails, calls, WhatsApp all the time to pay debt that I have never had. I have even phoned Cell C ***** to see if some one opened a false account against my name. I phoned cell C legal department and they just do not phone or answer my emails. I am so frustrated as this is all your mistake, and now I have to struggle to clear my name! You made the mistake and I want this fixed within this week, I even logged a call to the ombudsman. Nothing is happening? My one contract is coming to an end in June and I will surely NOT take out another. Your service is pathetic!