Reactivate my number ***

Vodacom. Why was my number permanently deactivated while in use? No warning what so ever. A number l've had for 18 years and is linked to my banking platforms? I want my number re instated back to me asap and no one seems to want to help. Also your collections department agents are disgustingly rude to customers. The service is appalling. Sent emails and no response provided. Called and was advised that the number has been deleted from the system. That number was working on prepaid and would like it to be reactivated again. Number in question ***