The problem I see here is that some businesses, doctor's offices, or other places will make legitimate calls from a phone with a different number than the listed one so as to not tie up the incoming calls. One of those calls missed may be one that is important and time sensitive.

I truly believe that phone companies can stop robo calls but won't because they are somehow making money from them. I have seen where a person can purchase a program to make numerous robo call per hour, and it is legal. It even allows the caller to spoof numbers. Spoofed numbers are a bane in my opinion. I have received a robo call from my own number on a couple of occasions, complete with my name on the caller ID.

I wonder if a class action law suit against phone companies for allowing robo calls and spoofed numbers for harassment and unnecessary interruptions, not to mention the millions of dollars scammed from people by crooks, would motivate phone companies to stop the insanity.