I briefly worked at a GC after working in a mom 'n pop music store for a few years back in my 20's. What struck me was just how different the two stores' cultures were. GC was essentially run like your average mall department store. Staff had no clue what they were doing, they worked for low wages, and turnover rate was quite high. In contrast, the mom 'n pop I worked for had employees that valued expertise and experience in music, were paid well, and worked there for years.
It was apparent pretty quickly that I didn't belong at GC; the "GC way" and its extreme department store approach nearly killed my ambition to sell instruments. I quit and happily went back to the mom 'n pop and worked a few more years there.
I've only been back to a GC a small handful of times since then. Every time it's the same thing:
Me: "Excuse me. Do you have product XYZ?"
GC Employee: "Uhh, what's that?"
Me: "It does (insert product description here)"
GC Employee: "Oh yeah! I know what you mean! It's over here."
GC Employee: [takes me to a product ABC)
GC Employee: "Here you go!"
Me: "This is not product XYZ."
GC Employee: "Sure it is. I sell a TON of these. They're on sale, too."
Me: [pulls up picture of product XYZ on my phone and shows employee]
Me: "THIS is product XYZ"
GC Employee: "Oh.....but have you tried this?" [Points to product ABC] "It's on sale!"
Me: (leaves the store)