Disgusted client!

I have been a Vodacom customer since 2008 and have had the same cell phone number for 12 years. Up until now i was a very satisfied, loyal customer and didn't make use of any other cellular network. But a week ago my phone suddenly lost signal and i didn't think much about it until i found out when people tried to call me my number doesn't exist. I then called vodacom customer care from another cell phone and spoke to 3 different people over a period of 2 days and was told my number is deleted and there is nothing they can do about it! How in the world is that possible? My clients can't get a hold of me which means i am loosing business, there is accounts and payment processing platforms i cant access because verification codes get sent to my number which now doesn't exist. I am super disgusted and need a solution !