just as info...there is a website for a National Do-Not-Call registry:
https://www.donotcall.gov/
That should help you with the in-bound machines at least...
..oh, as note, you *should* only need to do it for landlines, telemarketers arent supposed to call mobile numbers anyways...
also, if you can get a real person to shut up for 5 seconds, you can ask to be removed from their call list...if you are ON the National registry you ask for their name and the company's name and let them know you are going to report them for violating the registry
btw, none of this work for charities...so blind people can still get their money selling light bulbs or whatever