Customers... *facepalm*

Me: I'm sorry the frozen coke machine has put the coke into its defrost cycle, so we only have fanta raspberry
Customer: But I want frozen coke
Me: Well I cannot service frozen coke right know because its just liquid, its gone into its defrost cycle
Customer: Thats not good enough, I want frozen coke.
Me: Frozen coke is not available
Customer: Can I see your manager?
Manager: The frozen coke machine has gone into defrost cycle so its not frozen
Customer: But I want frozen coke.
me and Manger: *close window and just walk away*