You paid Google? Why'd you pay Google $20? That's $20 more than my number cost me. I mean, other than all the ads, engagement, and PII.
I signed up for my number in 2015, with a landline, because I had just purchased an Android tablet, with no SIM slot or mobile plan, so I decided that teh Goog was the best bet for VoIP for me.
You've got to guard your conversations on Voice, and don't mention forbidden keywords. Voice will instantly disconnect the call if it detects wrongthink.