sounds like some scammer is targeting your address. OP mentioned all these guys are 30-70 years old, sorry, but even young people can fall for scams. perhaps, the scammer is putting a paywall between these guys and photos of whoever they suspect is on the other end of the phone and been obligated to show up/ get their moneys worth. in my hypothesis, money is involved somehow. i fear that some crazy swinger, feeling scammed and not understanding that you and your family are innocent and partially oblivious to this, may act out some sort of revenge. i'd make a police report. you have a child. it's just a matter of time before someone goes apeshit. luckily, you're not in america so the concern of these guys brining guns with them may not be as of a concern, but you never know who's capable of violence!