While in the verizon app, when I go into my landline account, I try to block unwanted numbers, I get the message can't right now, try again later, it's been doing g that fie weeks
I don't think the call blocking feature works for landlines. Here's a thread with what I thought was an ingenious way to solve the problem:
https://community.verizon.com/t5/Fios-Digital-Voice-and-POTS/STIR-SHAKEN-to-prevent-caller-ID-spoofing/td-p/1771882
We've got your back! Sending you a private note now.
-Cryssie