And I receive useless robocalls from the City about what THEY think are "important" notices (which are not) and found out they refuse to have a way for citizens to opt out (and remember, I have an UNLISTED NUMBER). I finally determined the City uses a third party system and went to THAT company and they said the City didn't pay for an opt-out option! But because I was making so much noise, they manually took my number out of the system.
I can't stand robocallers and I think their use should be not just illegal but criminal. If it takes a few "welcome" systems with it, so be it. Why? Because every single one would claim they have a relation to you or you some how "opted in", making enforcement a joke. Use Email lists instead.