Call blocking doesn't work because they are using spoofing to hide their real numbers. Believe me, I've tried. They're calling me anywhere from 8 to 15 times a day. I have blocked 8 numbers on cell phone so far. However, some numbers contribute to call despite being blocked because of the spoofing software.
It started a few days ago. I notice that these comments are all pretty recent so this must be a new wave of attacks. And that's what it is, an attack. It's horrible and the FCC needs to do something about this!