have the owner call the people they will feel more appreciated and they might put a good word in for ya come monday you could be the cheif chilli fry maker thats how i became a manager when i worked at a department store we had some people being treated unfairly i handled business they told the store manager this guy should run some shit and just like that it happend i even got a good job pin you did your part very professionally thats is looked upon greatly you might be pissed off but if they come back its because you made them feel welcome when dude was being a prick so fuck him he is nothing but a piece of shit he will more then likely be unemployed soon for making your establishment seem disrespectful fuck him