Sadly, this is exactly the sort of 'dumbth' I have seen in my last 3 jobs. It's not just impoliteness, it's total apathy and lack of caring a damn about people. Each place has its good staff but, of course, when nothing is done about oafs like these, the good ones leave....often. I don't know where they go but I fear some of them leave the profession altogether through lack of support and respect for the good work they do. Whilst behaviour like you descibe is allowed to go unchallenged, the hard workers get despondent.