I’ve found that just not answering any calls from unknown numbers (and having my phone just silence those calls so I don’t even see them) prevents all of this. If the caller is legitimate (e.g., new dentist office regarding an appointment) they can leave a voicemail. And if it isn’t spam and they aren’t willing to leave a voicemail and have me call the back, it probably wasn’t important in the first place.

Sure, I may be missing out on some opportunities. But the peace of mind is far greater.