Vodacom deletes my number off their network and no one can tell me how it happened

I have had the same number with Vodacom for over 10 years. 5 of those years it was on contract. Since May 2017 , this number has been on prepaid. On the 23rd Jan 2018, my number stops working and the sim only allows emergency calls. After spending 4 hours on the phone with Vodacom's *********** staff in both the customer service and contracts division, nobody knows what happened. Only when I went into the Vodacom Shop at the Glen Shopping center, was I provided with an explanation of what happened. Apparently due to a technical issue on Vodacom's side my number was deleted off the network. With no notification or reason. Due to negligence from some tech behind a desk at Vodacom, I no longer have the my number that is crucial to my work and life. I would like a response or a call from someone with more than one brain cell to tell me how Vodacom is going to resolve this issue and give me my number back . With all my issues with Vodacom I remained a loyal client, but it seems to me that a business as big as Vodacom does not care about client loyalty and would rather not deal with the issue or provide excuses.