The first time it happened was at Sam's. I had just gotten a free sample of food from the lady, when this woman pulls in as I started to walk away, and scraped the bone at the back of my foot. I screamed an agonizing OUCH! The bitch just looked at me without apology. Her husband looked at me and SILENTLY said sorry.
AGAIN the same thing happened at Sam's as I was leaving out the door. The woman scraped the the back of the same heel. At least she showed concern and said she was sorry.
I've made up my mind to wear combat boots next time I go to the grocery store. I might even take my boxing gloves, too!