Some people may not agree with me on this but I fight fire with fire.
I deal with arrogant people , if I have to deal with them at all, with arrogance
right back in their face. Most arrogant people are insecure, ego inflated ***holes. My best advice though is to simply ignore them and walk away. This is what I try and do in most cases.
This will probably infuriate them as they now know they can't get to you.
There are numerous reasons why people are this way. Let them deal with
their problems. Stay above the fray.