I would also  advise you to automatcially block all incoming Telegram calls, unless made by one of your contacts.

For extra privacy you can evenalso delete your username alltogether so only those who know your phone number or that are in the same group as you can contact you first.

I would also advise you to block all incoming Telegram calls, unless made by one of your contacts.

For extra privacy you can even delete your username alltogether so only those who know your phone number or that are in the same group as you can contact you first.