Is this a data breach?
Earlier in the year, I changed my number to get away from some people. Before changing my number, I made sure several people were already blocked + deleted as contacts on my phone, Telegram, WhatsApp etc. I made sure to do this before changing my number. My setting on telegram has always been that nobody should be able to see my number.
Weeks after changing my number, one of the people I blocked got hold of it. And they said they got it by accident through Telegram. They said that I popped up as a new user on telegram and my number showed. Weird because I never remade an account. They were always and are still blocked on Telegram.
This is really annoying as I went through the hassle to change my number just for those who I blocked to be able to obtain it. I did send a message to support and haven’t received a response yet.
Before anyone suggests this, no - nobody could’ve given them my new number. Simply not possible.