Sometimes I'll answer it if it's local, or somewhat local. Logic being that you never know if something happened to somebody you know and you're being used as a contact. Highly doubtful though so that's why I don't necessarily always pick up.
My move (because I'm a peach and don't like to have to awkwardly say "no thanks" to solicitors) is to just say "hello? ...hellooo?" a couple of times after I realize who it is, as if I can't hear, then hang up and block them lmfao.
PSN:
LoveLikeJazz
https://soundcloud.com/pacuta