We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
A few months back, Consumer Reports did a piece on various call block options. The most effective one, that got a recommended rating, was NOMOROBO, which is free. I signed up for it, and it has almost completely eliminated the junk calls I was getting. It doesn't work on all telephone systems. It depends on who your provider is. It's worth checking out.
The phone manufacturers AND the phone company could do a lot more to provide these kinds of services to the customers. The reason they do not is the system doesn't cater to you the user it caters to those who prey on you.
My phone effectively blocks all unwanted calls. I keep it shut off.
I have one of these and it works, but I add more numbers weekly. Blocking a whole area code works well. Having more than one wireless phone, and a couple of long wire runs, made it problematic, but I finally found a configuration that worked.
Some Panasonic phones have good built in call blockers, but mine only holds 30 numbers. Some newer ones will handle 250 numbers.
My phone company will block a few numbers, but I couldn't make it work. After much time and multiple tech support calls I finally learned they only blocked local numbers, but nothing from outside the area code. Gee, Thanks!