I see. Off course I only speak from my environment. Even if ID details would have leaked, it should be impossible for someone to get my phone number, even if the person knows my name and phone number and any ID details.

It's actually quite hard to get authenticated for a new phone number in my opinion. In example last year I setup this new number and at first try it did not work, without giving any reason that could give a hint. I ended up buying a different prepaid sim card and the process was the same: go to bank, and do all the shenanigans and dance.

BTW sorry for my previous inflammatory language; I get heated up pretty quickly. And you stayed cool.