Cell C - Disappointing Service

Cell C decommissioned my cell phone number which I have been using for many years without any notification. I changed network to Cell C in order to have a good customer experience but seems this was not the case. I called Cell C when I realized my number was no longer working and was told there is nothing that can be done and I can no longer use my cell phone number. I was then told to perhaps go to a branch and see if they can help me but was told exactly the same thing. It is very disappointing that there is not even a courtesy call to advise the number will be decommissioned from me forever. We have alot linked to a cell phone number as this has caused massive inconvenience. Very disturbing.