I already block all non-contact calls and messages, well, I filter them out and check them every few days to make sure nothing important has happened. Just like my spam folder in my email. If I let spam calls actually ring-through on my phone it would drive me insane because I get at least a dozen bullshit calls a day.
We need to get rid of the old phone system entirely and switch to something authenticated that can’t be spoofed or abused as easily as our current phone system can be. When I think about it, it’s kind of weird that we haven’t done that yet. Probably because it would cost too much for the big phone carriers to do and then they wouldn’t get their billion dollar bonuses at the end of the year.