The number supposedly identifying where the call came from is meaningless because spammers, telemarketers, etc. routinely spoof caller ID. There are even apps for it where you can do it yourself. I doubt 1 in 100 of these pests uses the actual number they’re calling from. If a number isn’t in my directory I don’t answer it.
I got three calls today in an hour from the same person using the same area code and exchange, only the last four digits varied. All of them had the same millennial sounding girl, starting with do not hang up. This is not a sales call. I could hear a bit of politics in the background, but did not listen to the rest of her spiel.