My last Radio Shack experience was interesting, as well. I stopped in to buy a chimney strap for mounting a pole for a DirecTV dish to a chimney on my roof. I figured that they couldn't make fools of themselves since it wasn't a piece of electronics.
I looked around on my own but couldn't find one. Then an employee asked if he could help me. I told him what I needed and he went into the back and got it for me. Exactly what I needed. I took it to the counter and the manager asked the other employee if he was sure he got the right thing. I assured her that he had. I don't think she heard me because she repeated the question to him.
I stood back and let them finish up their little tiff before paying for it and walking out. Poor guy.
