Complete Loss Of Network

I ported to the network after having great difficulty from the previous network I was on. I later moved to Cell-C which proved to be a charm.<br> For the past month and half I've been having a serious problem with the network. To a point where I can't even receive or make calls. <br> Two weeks ago I logged a technical support query and was told that the network is doing an upgrade. I then experienced the same problems for a while. I called customer care again and I was advised to do a few changes to my mobile and it became even worse. <br> I lost my cool after my own aunt required medical assistance and couldn't get hold of me due to No Network. And I also couldn't conclude a venue for my business because of the poor standard in the network.