Make a statement with your wallet. Stop frequenting the place. Ordeer stuff online, or go a little out of your way for a better experience. I have a specialty shop directly up the street from me. I drive 12 miles to another. Why? Because of the people who work there. It's all about the experience. You want my money? Treat me right, and order what I request. Pretty fucking basic. I won't go somewhere where they can't grasp that. Good luck!!
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Be nice to people on the way up, you'll see them on the way back down.