Vodacom

My cellphone number I've been using for almost twenty years was ported to MTN without my permission on the 16th May 2019. I lost my airtime during that process. It was a prepaid when I had it for the 1st time around 1999 and it's been contract a couple of times and I had converted it when to prepaid over a year & half ago. Since then I've been trying to recover my number with no luck. I've called MTN to port it back and they've done it long time ago. Vodacom is unable to activate the number. I've called their Call Center, interacted with them again on their twitter handle, & and I've also been to a couple their shops but still couldn't get the help I need. I use to receive notification from my bank & it's registered with all my service providers. I'm unreachable because of it and somebody almost opened a credit card with Absa using my details.