It's not a people problem, it's a work culture problem. Chick-fil-A pays comparably to Walmart, and their customer service is extraordinary.
But I do get your frustration with Walmart. Some of the employees don't seem to have a basic understanding of what good customer service is. However, I do find it sad that users on a website called "Cheap Ass Gamer" would ever think that retail employees are beneath them.
Be nice to people on your way up...you may meet them again on your way down.