The vast majority of voicemails that I get from unknown numbers are a prerecorded pitch about improving SCO. Too bad I registered some websites before there were privacy options to prevent personal info from appearing in a whois lookup.
Even better: let me set a list of keywords that flag or delete messages if they appear in the transcription. Sigh.
I get legitimate calls (very few) about things like building maintenance trying to schedule when my apt needs service, the finance company wanting paperwork when I paid off my car, etc. At some point, there will be a call from a hospital about a family member. I can’t risk not receiving any of the legit calls among all the spam.
These people will call again if you don’t have voicemail and you didn’t answer.
I don’t answer unknown numbers. Letting them keep calling without vm transcripts to screen them does me no good. Also, I want to know about a family member in the hospital right away.