I'm going to make a post later with some tips for how to handle Walmart employees.
Another story from this past weekend...
I called a store last week to check stock of Pokemon Ruby since it was a good quantity (3+). They seemed rather rushed on the phone and told me they didn't have it. Later that same day I called back and someone else checked, said they didn't have it. Now keep in mind this store is over a two hour drive for me, though nearby where I was visiting this past weekend.
Over the weekend I visit this particular walmart and man was it a cluster bomb. Quantity still showed 3+ of Pokemon Omega so I hunt down an employee. The first two offer to help, went to find a scanner, then never came back. The third I tracked down at the counter asking for help with a game, said which, and out loud the employee says to a coworker "yo this that guy who called the other day, I already told him we don't got it". At this point I stood my ground and said someone needs to help me find it.
In the end an employee did check the scanner and said they might know where it is. Sure as shit they came back with the game in hand, and the cherry on top was this was the employee who I talked to on the phone the few days prior. Left with a huge smirk on my face.