Agreed. While talking to companies about a new role last year, I'd only unblock the phone at the specific time I was expecting a call.

I did miss a few calls when recruiters called me without scheduling it first. I made it clear they needed to email me first with a call time, or I wouldn't be reachable. Sad, but that's how terrible the spam problem is on phones these days.

Fortunately people calling from companies almost always leave a voice mail, while robocalls almost never do.

Blocking rings doesn't block voice mails, right?

I almost always get voicemails from the robots. Often enough they don't actually say anything but they stay on the line long enough for it to happen. I just get an empty voicemail with static. Fills up my voicemail too so I have to go clear it