I've checked some of the numbers ... after-the-fact ... on whitepages.com by "reverse telephone number" and usually they say spam or possible spam. I immediately block them on my cell. Can't do much on the landline.
I will NOT hit any other numbers for fear I'll be connected to some distant country at $99.00 per minute!!
I will NOT say yes or no - to a live OR recorded person - as they can record my 'answer' and place it on another voice recording saying that I approve of some expen$ive item or cruise or trip, etc. Wonder where the legality is in that??
If you don't know the number and it's not in my list of approved callers, don't answer it. Let it go to voice mail or the answering machine and deal with it later, if need be.
I agree with sewvicki... what a waste of time and energy. Wonder how desparate these people ar to work on that type of calling!?!?!?
Good luck out there. It's a crazy world.