Actually doing something about scammers / annoyance calls

For years I've tried to get off every database to cut down on the number of annoyance calls. Unfortunately in this age of spoofing local exchange numbers so you feel like you "have" to answer them I'm getting tons of scam and telemarketer calls.
So... time to do something about it.
1. Use the carrier lookup tools at carrierlookup.com or cid.ninja to find the company that is supplying the line.
2. Use the short list of carrier abuse contacts at scammerblaster.com or a Google search to find the abuse contact for the carrier. If you have a few minutes read down the page at scammerblaster - some interesting info.
3. Report the call(s) to the carrier's abuse contact or to their network admin if you can't find an abuse contact. (you find their network admin through a "whois" search of their domain name) You can also use general mailboxes or specific executives if you can find them.
Chances seem to be about 50/50 on getting any sort of response BUT on the responses that I have received they usually say that they have taken steps to see that it doesn't happen again. Particularly satisfying if the offending caller was an IRS scam or fake tech support.