You didn't mention if the hole in front of you was clear. I have seen people that fail to keep up with the group in front, then refuse to let anyone play through, this sometimes results in a gentle reminder from behind, to your obligation. Barring that...if it happens once, I ignore it, twice they get a dirty look with the hands in the air..lol..third time I just let them play through, and I usually mention it to the course management. Of course like I said, it all depends on my group being in the right, if the hole is open in front of me, I don't have a leg to stand on, and should have been more worried about my Etiquette. Which ever way it goes, I never use profanity, or lose my temper...probably not a good idea when both sides have multiple iron weapons at thier disposal...you know mutually assured destruction deal..lol...

The bottom line is, as Ron White says. You can't fix Stupid, courtesy is part of the game, some times you just must take the high road and overlook those that are new and/or ignorant.