Please fire me. I work in pet retail as a dog trainer and cashier when I don’t have classes. A...

Please fire me. I work in pet retail as a dog trainer and cashier when I don’t have classes. A customer came up with over $400 worth of new things for her dog. She was snobby the entire time, looking at me over her obnoxious sunglasses (on a cloudy, nearly overcast day). I pull through with a smile and when I tell her to swipe her card, she goes to do it, stops mid-swipe, and say “No. You do it.” With a smirk on her face. I politely tell her our systems don’t allow us to do that and she stares hard at me. This woman then decides she doesn’t want any of this stuff and wants to go to the competitor. Yeah, bitch. Don’t let the door hit you on the way out.