If you're going to call someone at 2:45 in the morning, unblock your freaking phone number. That way, when you suddenly hang up after thirty seconds of silent response to my repeated "Hello? Hello? HELLO?!?", I'll know:
1. It's an emergency, you can't breathe/move/speak and I should - and can - call you back
2. You're an idiot, and I should have access to your number so I can call you back
Just a public service announcement from the woman who was awakened by a "PRIVATE NUMBER" call at, yes indeedy, 2:45 this morning.