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Most people wouldn't want to use a broad approach when blocking calls. With the ability of the scammers to use actual phone numbers, you'd end up blocking people who really needed to call you.
Our pharmacy makes auto-calls when maintenance prescriptions are ready, or "real" calls if there is an issue with a prescription. Those calls come many different numbers. The last few times we had a delivery or service call for something, the person who called to say they were on their way used their own personal cell phone.
The same goes for the doctor's office that has multiple outgoing lines.
It's one thing to want to block numbers that can't actually be a real number. But the scammers don't do that nearly as much anymore. I'd love to stop the spam calls, but not at the risk of blocking legit calls.
I've seen folks say that if a number isn't in their contact list, they don't need to speak to them, but that's not a good or efficient way to operate. No one can have 100% of the people they may need to speak to already in their phone. It's just not feasible.
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