So, my wife works for a Walmart. She often likes to tell entertaining stories when she gets home each day, or vent, lol.
Anyway, they recently had a customer returning piles of empty pool chemical boxes and bottles, making a scene, and demanding to see the manager. She insisted they must sell bad chemicals. After going in circles she supports herself with "I KNOW they have to be bad. This is the same stuff the pool store said they knew would work!".
LOL, I'm sure MANY ask the pool store and then run to Walmart, but going back to Walmart? lol.