I did this probably over 10 years ago, I have not changed my phone #, and I receive very few spam calls. I did receive some in 2015 and stated I would like them to remove me from there list and not contact me again, and I never heard from them again. The majority of "spam" I get is from recruiters offering me jobs for tech I haven't done in 15 years :(
[1]: https://xkcd.com/1129/ applies well to me.
I still get 5-10 spam calls per day.
... The number of calls went up and stayed up months after i did that.
Technically, yes, you can obtain a judgement against a call center operating outside the US, but you're never going to collect on that judgement.
True, but they mostly call you if the polls are closing and your haven't voted yet.
> Any nominal business relationship is also exempt.
true, but here again they have a relationship and are at least somewhat useful. They also aren't robo calls, but a real person spending their time calling you so they won't abuse your time like robo calls do.
As for the business calls - it's a lot of car warranty crap and similar mostly useless, borderline scammy sales pitches.