Bad Customer Service

I have been having an issue with Cell C for a month now regarding a new contract that I had taken out with for a modem. Cell C under the auspices of their consultant did not advise me that the contract would be an \open line"and that once my 5G wifi has finished that I would be billed. I had no method of even monitoring my usage and now the account is suddenly up to R2100. Patrick Mpoti from Cell C a very rude gentlemen I may add who was tasked to resolving the matter as promised by the Call Centre Consultant Supervisor to make my package a pre-paid one and to sort out the R2100 charge has not come back to me to date. I have called Cell C twice now with the call centre agents assuring me that they have sent Patrick an email advising him to call me back urgently. To date the urgency or the concept of customer service is not known to Mr Patrick Mpoti it would seem. VERY VERY BAD SERVICE I am due for an upgrade with Cell C on an existing Cell phone contract but I refuse to upgrade"