Cell C is on Stage 6

I have a Telkom line at my business and cannot receive any calls from Cell C users. I tried to report this problem with Cell C as this is a network routing issue, not a Telkom or account issue. I tried to report this issue by dialing their so called support centre and after being correctly transferred to the technical department, things started to go from good to Eskom Stage 6 in 60 seconds. The guy that took my call was extremely arrogant, didn't want to hear about my problem on their network or even give me the opportunity to explain where he can start to look for the problem (I'm in the telecoms industry), then transferred me back to the customer care dept. By now I asked to speak to a manager (apparently there where many at the time) but he/ she could help me and were going to call me asap. 10 days have elapsed and I'm still waiting for these phantom managers. I'm quite sure that I will not be making use of their services soon. Unless they can call me and proof that they do care at customer care....