Bad behavior of an employee

I love all of their employees except one guy by the name of hassan.This guy is always unnecessarily rude ,I don't know is it just me or he does this to all the customers and he's done this a couple of times. We spend so much of our money at this shop to be treated like second class citizens. They need to talk to him before they lose majority of their customers since what they sell can be bought on line. He can't keep making us miserable when all we want is assistance. If he's tired of working there he just needs to say so before they lose customers and all those other employees lose their jobs because no one wants to buy there because if his stinking attitude