I have always hated returns from customers. And if they are screaming and making a fit, then they are trying to pull something, most likely. It amazes me that people will pout so much over a return.
The worst I ever had was this older guy was trying to return a Cell Phone that was eight months old, and he demanded cash even though he had purchased it with a check. When it wasn't going his way, he sweeps back his coat and there is a Derringer clipped to the inside of his pocket. His hand is resting on the top of it like he was going to draw.
WTF right? When I told him no once again, he kinda deflated and left with out doing anything. I guess that it was just for show and he thought that it would be enough.
Being that he didn't actually pull it out or try anything, I didn't back down.
Of course I had been in the Army, and it wasn't the first time I had seen a gun.