That's how I tell the scammers from actual calls 95% of the time - the scammers never leave a voicemail.
It's frustrating because all we'd need is some way to trace calls back to source providers and then let us apply client-side filtering akin to UBlock Origin. Easy.
Now, there are other ways this could work. My company has a "director of client services"—let's call her "Anna"—and all parents have Anna's number. So I suppose I could have called Anna, and Anna could have called the parents, and then Anna could have called me back to relay what the parents said. It just would have taken longer.
Of course, Anna is occasionally sick / on vacation / otherwise unavailable, in which case there's a second person—let's call her "Vivian"—who I can reach out to in an emergency. We're an after-school program, so we're not set up to have a centralized office phone, but I guess parents could add Vivian to their contacts as well.
Basically, I'm happy I was able to just call the parents.
I've only once had the problem that someone from the school used their personal mobile to call me and didn't get through, but I was already calling to let them know I'd be late.
There's no reason for parents to be able to contact you socially unless you invite it, but surely you should contact them from a school/shared number?
I'm suggesting this not for the sake of others, but for your sake. Given that people will block unknown numbers, I would think using a known number makes your life easier.
Put another way, how would a parent contact the program in an emergency? They'd likely (as you illustrated) go through an intermediary that may or may not be there. That seems less than ideal, and certainly wouldn't be something that I'd be happy about if my child were in the program.
At least 99.9% of my voicemails are a couple second long robocalls, but in the rare event of it being a genuine phone call, I get the google transcription of someone saying 'please call me back' on my watch and then I do so. Just because I'm willing to glance at notifications on my watch of incoming voicemails for an instant, doesn't mean I'm willing to talk to hundreds of robocallers per month. Its just too expensive.
Voice phone calls are dead, kid discussion would usually be handled via text or email. I don't really get phone calls about my kids. I believe the more corporate-type environments enjoy the written documentation provided by text/email as opposed to unrecorded undocumented phone call.
The era of always-on low-fi audio connections was very short. Just 30 years ago, parents certainly had no electronic tether and had a home phone number, maybe with an answering machine in later years. And now that technology is completely dead and unusable.
In the case in the GP, maybe a message would have worked too but I don't see the problem with calling.
That said, I get a lot of spam calls on my Fi phone but I simply don't answer if I don't recognize the number. Fi asks me if the number was spam and it's simple to give a brief scan of the transcript if there is one and tell it yes or no.
I am amused by this blanket assertion. It really depends on the age/type of people involved and the kinds of interactions they are involved in. I am 50 years old and work in both software consulting and run a tugboat company. I had to take over the tugboat company two years ago due to a death in the family. For 30 years prior to that, I was working almost exclusively in software. During the last couple of years before taking over the tugboat business, I had my phone set to do-not-disturb almost all of the time. In the tugboat business, that does not work at all.
For dealing with software people in purely technical matters, text/Slack/Teams is fine. I respect the needs of others who don't like real-time conversations. For doing business deals in software, I often end up having phone calls with decision makers.
For the tugboat industry, it is too fast paced and too much money is on the line in quick deals to screen phone calls.
Don't assume that everyone works the same way.
I teach an after-school coding class. Some weeks ago, the parents of two children didn't arrive at pickup. After 20 minutes, I called the parents using the phone number listed in my company's system. The parents confirmed they were running late due to extenuating circumstances and were now five minutes away.
I think this was probably better than involving the authorities?