What pisses me off is when a retailer takes something in as a return then just boxes it back up and puts it on the shelf to sell as new.
When my son was younger, he saw this really cool Air Hogs RC plane he wanted for his birthday. I got it for him, and when he unwrapped it and opened it, it was missing parts, had the plastic bags that parts should have been in just wadded up in the bottom. Hell, their little pinkish return sticker was still on the plane.
Upon closer inspection of the box I noticed they had just put a piece of tape over the original factory tape. I was pissed. I normally don't complain to customer service, but when I got there I asked for a manager (He gets paid to listen to me bitch, the poor girl working the register doesn't. I'm only an asshole towards the proper people).
The manager didn't give a fuck, which wasn't much of a surprise. I swore off Walmart after that. Hell, I don't agree with "retail renting", but I'd have no problem with using Walmart for it if I did it. Fuck them.