Parts Store Rant, the other side of the story
A good customer is one that works with you. A bad one doesnt. Simple as that. There's a manager of a local Firestone who made a game out of riding parts guys to death. I took his **** for two weeks, then began hanging up on him when he got beligerent. He ended up driving over to the store and came in with a big smile and shook my hand saying I was the first guy to ever not take his crap and he could respect that. We got along great after that. If a customer is respectful of a counter person and what they know, and the counterperson is well trained, stocked, and motivated... You can't lose.