When we were kids our parents called us out on whatever stupid things we were doing. They way they did it was to ask us questions. Do you think, now, that it was a good idea. What would happen if.....? How would you feel about what you did if your friends knew. Etc. This guy's parents must have kicked his ass when he did something wrong so it's a scary adventure instead of an opportunity for growth and better understanding of what his actual job is.
However, it's the Corporation's fault, really, for not finding people in whom those values are already instilled because they can't really be taught, they can only be tamed. I know, based on my retail experience, that this is not the case. They are not hired for those features. The retail industry can be full of spite and vengeance, sometimes, as well as kindness and helpfulness. He's lucky you're not me because that guy would have gotten a big ole' screaming piece of my mind right in front of everyone, I know how to use their intercom system!