the phone calls are meant to see if the phone line is still active and to trace the location of you. they also have a voice registry on people. the entire thing is mostly automated. sometimes they will have employees do it but it's a massive amount of work. back in the us i used to get upwards to 8 automated disconnect calls that would have a moment like 4 or 5 seconds where they would try to capture a "hello" or something. people used to believe these where from a broken cold call system but it's just a big government program to create a spider web of threats to track. i recommend you try to find a way to get a phone number not in your name and just use telegram or signals or some crap. obviously everything is unsafe but the best way of handling cellular service is having it in a smudged name. how to smudge a name is very easy. let's pretend your legal name is john sam bradley. you never provide your middle name. you would put johnathan as your first and bradey as your last. the best way of registering for anything is online or over the phone. your address can just be a random one anywhere. how to do a social? let's say your number is 430 66 3756. you would put down 430 66 3765.  they require documents to prove identity, most of the places have 95 iq browns working there that just quickly check boxes. i had multiple bank accounts with smudged names and socials. the absolute beauty of a smudged name is if they catch it, it's the fault of the person who looked at the documents. if they come after you, you can always day you typed it fast and it was a mistake. this is extremely easy in the united states. you can completely operate with a smudged name and no real address for practically everything if you don't care about building social security. if your putting your real name on things like game accounts, phone bills, and utilities your a idiot. all they care about is getting paid. the government cares about your information.
Bulgaria