Wait, so not only did he charge you in the first place, but did I read that right, $50??
to stop a nail from bleeding?? I mean stuff happens, quicks get hit, but geeze, was the entire nail gone or something? you're right for getting mad at him charging you for that regardless of how had it was. Why the bandage? And no, I've never heard of a cut nail getting infected, I'm sure anything's possible, but I can't possibly imagine.