I know how tough it is to work in the retail/food service business so I tend to be super nice to people and rarely get bad service. The only times that I can recall getting poor service have been in restaurants with a waiter or waitress that was super tired and distracted. I don't have any horror stories to tell though.

Due to total incompetence on the part of the store, two failed deliveries of my new fridge freezer and a catalogue of unacceptable excuses, I was forced to go into said store and rip the ears off the manager. No amount of grovelling could dissuade me from accepting a replacement/a discount/a guaranteed delivery date. I got a full refund and haven't shopped there since !

GINGER:
You're much stronger than I. I don't have the willpower to walk away like that and usually end up giving in just to keep the peace.

Yep that dumb sign that says 10 items or less.There was one in front with 20 or so checking out.I ask the clerk why have the sign. she said we do not enforce it.Why put up the sign.Cant say any more i am burning up

ROBERT:
That sounds more like stupid customers than poor customer service. However, I agree that it makes no sense for them to put up a sign if they aren't going to enforce it.