> if someone is calling from a legit number on caller id it means NOTHING. You have to call back to a legit number to be sure it's real.

This reminds me of one time where I got a call from a number I don't know, got yelled at something about spamming calls. Yelling includes threats about getting reported to police or whatever, which was confusing since I never had any history with this number.

I suspect my number was spoofed. I'm not sure if there's any defense against that.

Now my default is to ignore any unknown numbers.