Asshole-ish and Stupid Customers at your job

At the summer camp where i work, some of the parents of kids are unbelievable.

We have a coke machine in the corner of the main lodge which is used only for rental groups. Our manager empties it, and unplugs it during the summer.

Just two weeks ago I'm wandering around the main lodge, making sure all my campers are in the cabin, and not where they're not supposed to be, when this parents walks up to me with the fire of hell in his eyes. He tells me that he put a toonie (two dollar coin) into the machine, and it won't give him a drink, or his money back. He demanded a refund. Rich, the manager, wasn't there, and neither were any of the directors, but it didn't matter, cause none of the staff except for the manager have anything to do with that machine. I threw him a toonie out of my own pocket to get him to shut up. After that he continued to walk around the lodge as though he owned the place.

Also, once last summer, i had a camper who was violently ill. He threw up six times in one hour, and we finally decided that we couldn't keep him here. The nurse needed rest, i needed to be with the rest of my campers, and the directors couldn't stay up with him either. We called his parents, and it turned out that he lived about a 10 minute drive away, which was really nice. When his father arrived, he looked pretty mad, and spoke in a way that blamed me for bringing him out at 10:00 PM (which really isn't that late). He wasn't that friendly to the nurse either, as she tried to give advice on how to keep his son hydrated. He just looked at her with tight lips, and rolled his eyes every now and then. I couldn't believe how rude he was being. This woman had just sat with your son for an hour and then some watching him throw up repeatedly. Thankfully, i haven't seen this parent around this summer so far. Something tells me he'll be there on monday though.....

How ya doing, buddy?