A lost hiker ignored rescuers' phone calls, thinking they were spam
npr.org
npr.org
Or maybe search-and-rescue can get a clue and realize most people don't pick up calls anymore.
"If you're SAR, and you don't get an answer after repeated calls to a number, send a fucking text message instead of lecturing people on how they're doing it wrong." If for no other reason than SMS stands a better chance of getting through than a voice call when coverage is spotty.
Of course, if you leave a voicemail, I'll check it, as a very large percentage of the spam calls I receive do not leave any message.
I got I think three in two days so I started answering, after holding the “business loan purveyor” on the line for three minutes he called me a fucker, hung up, and I stopped getting calls.
Every now and again I get them again so I answer, try to get the warranty extended on my 1992 Honda registered under Jack Mehoff’s name and then they go back away for another few months.
It’s like getting the opportunity to do improv every couple months and seeing how far you can get.
My phone ends up being much quieter than most people’s as far as I can tell.
They call random numbers for certain areas, just as they use random semi-localized numbers for the recipient to see.
You probably have an area or prefix that isn't all pumped up with spammers at the moment. But it's not because you're being clever with them (although that can indeed be fun).
In any case... wouldn't be easier to triangulate the phone position? They only need him to answer to save a rescue.