Vodacom staff *****s sim number!

Vodacom staff *****s my pre paid sim number! I bought a pre paid Vodacom number in 2013, in 2018 decided to update it to contract. Vodacom service centre in Lephalale told me they cannot immediately transfer and use my original number, which I found strange, but have to use the number they gave me, and then 6 months later I can migrate my original sim number. I waited, went and was told that Vodacom gave my sim number away to someone else. It can only be the staff at VC Lephalale, Cindy, that saw it was a great number and fed me the bs. Today she says she can't help me. I have proof that the number belongs to me, yet VC unwilling to help. I want my number back.