Sorry for the additional post... When I post from my phone it won't let me edit.

When I was in customer service people would flip out on the cashiers for things they couldn't help. For example, when tim hortons raised the price of coffee .05 cents a cup. Man were people angry but unfortunately there was nothing I could do about it. It's not like I raised the price lol. But when that happens you just have to smile, apologize and wish them a good day... Even if you might want to respond in a different manner lol