Edit: I have often seen a referee give a free-kick for "not calling a name" when a player asks his own player to "leave it" (referring to the pass). I can't find this 'offence' in the Laws of the Game.
Have you, really? Seen that often?
That's one of a long list of things players sometimes think are an offence which referees know are not. I probably get an appeal from players about it once or twice a season. Assuming you're watching semi-pro non-league football I'd be very surprised if you ever seen a free kick given for that (unless it actually puts off an opponent).