Vodacom puts the phone down on clients

I have just had 2 consultants put the phone down on me, after I sat waiting on hold for 20 minutes. I have a number attached to my account that I did not ask for. I have no idea how it got there. I asked them to remove this number in September of 2021 and it is still there. They then tried to offer me a device for the number - even though I don't even have a sim card for it. There is no valid reason for this number being on my account. And they are charging me for it. That is down right theivery.