>and phone calls are always weird when I answer "Hi, this is Phil" and the person on the other end goes "Oh, sorry, I was calling for $FIRST_NAME". <click>
So don't answer the phone that way. There's no reason to volunteer info to a complete stranger you know nothing about anyway. All you have to do is say "Hello?" Then the caller will say "I'm looking for <x>", and then you can handle it however you like.