Open line without my permission and now I’m required to pay

I recently upgraded my Vodacom contract on the 31st March 2025, and I approved my contract monthly amount via a text to agree to a certain amount. My contract is 100mins top up. Last month I recently found out I’m not on top up but instead my line is open to limitless without my permission and now I’m owing along of money they forcing me to pay it.

3years ago this also happened where I was upgrading to a 13pro max and they did the same thing to open my line without my permission and I ended being block.

So now they say I must pay these amounts first before they put my number on 100mins prepaid or else they will block me number. How is this possible when I did not sign up for this. Clearly Vodacom is *********** because this is the second time they do this to me.

Vodacom fix this