Unprofessional and unreliable!

I have an LTE-A router and have not had signal since Friday morning (12/04/2019) I called the technical department on the Friday evening, was transferred 7 times, conducted 4 security checks, just to realize that I kept staying in the technical customer service department and wasn't going through to the right person that knew how to help me. After 21 minutes on the call, I lost my cool with the rude person I spoke to last and ended the call. I called on Saturday, the gentleman told me the technical department was on strike but will open a case for me and I will be contacted in 24-48 hours.... I am still waiting for this call to assist.... Went into the Cell C store with my router on Sunday and there is nothing more disgusting that dealing with a "professional" person that is chewing bubblegum like a *** chews grass and takes personal calls while busy with a customer.... He put my router's sim card in his phone and there was connectivity, to which I stated yes, I have tried that but the connectivity only lasts for about 5 mins and then goes off, but he did not believe me and continued to tell me I need to send the router in, as its faulty..... The router is not faulty, I have had the same issue before and the technical department fixed it. I will not be renewing any of my contracts with Cell C.