Do not talk to unknown numbers, etc.

Okay, first of all, when someone calls from an unknown number, it doesn't matter if it's blocked or not, you can answer the call but do not speak at all, only say what you know. Because if you say even just 'hello, who is this,' they can record your voice and use it to do various things. Then they can call your parents and say, 'Mom, I'm stuck here, send me Bitcoin to this number,' and they can transfer it. This is how people steal money. Be careful, it's very dangerous!!!