Multiple unrecognized calls daily; and when I check here, I'm either the first or among the first. No way to block since they just call again with a new number. Caller ID shows "Fowler T R" plus the number. No message left.
Many of the pests and scammers are calling from outside the US, out of reach of US law enforcement. They use spoofed numbers to hide their real location. They cannot be caught.