I often get calls from people I don't know for legitimate purposes.
Spam calls happen but I'm not interested in social credit ratings for callers.
I guess the signal-to-noise ratio matters.
In the last 3 months I received 700 spam/scam calls to my phone, my wife received about 400. We can't turn off ringing for unknown callers and we're getting mad. A few days ago I vented to one of those call-center people trying to sell me a cheaper power utility for the Nth time, and told her to find another job or something like that; she actually called me back yelling at me that "any job is worth", and yelled at her that I cannot fucking receive sometimes up to 20 calls in a day, sometimes at quite annoying times of the day! It's getting ridiculous.
EDIT: I know not everybody is having the same experience in my country. Some people are only getting a few calls per week; I registered our phones in https://registrodelleopposizioni.it/ and also I'm using android's spam filter which filters out additional hundreds of calls automatically.
EDIT 2: I sometimes wonder if we're being harassed by somebody ; I cannot tell. The voices are often quite similar, but it might be the albanian accent that makes them sound similar.
EDIT 3: caller id numbers are always different
I too, but I never take them before I've looked up the number. If it's important they'll take my call or call back.
If some unknown numbers calls me and they're not a courier or the bank (which rarely calls) I immediately assume it's a scammer.
Yes, was just relating my experience - it's just go the the point where I personally opt to play safe. Like everyone I do get calls from people who aren't in my contact list but it was getting silly so I've defaulted to ignoring them and it works for me. Anyone serious is going to be happy leaving a message - which suits me anyway as I spend a large part of my work day in Teams calls.