Google and every one of its apps and services sucks now except for Fi, which has been life changing for me with regards to spam.

There's a setting that only allows calls and texts from your own contacts, period. (Though anyone you've texted or called recently is allowed for a month.) Prior to enabling this I had all the usual stuff like Call Screening and even though it caught most spam I still was annoyed at seeing the silent notification that meant is was in the middle of getting a call, and honestly even the few junk calls that made it through just irritated me to no end.