Thank God for Amazon! Do not give Stages your business. The grumpy guy who usually works there is so unreasonable that it's silly.
I sent my 16-year-old guitar novice to buy a certain type of acoustic string. He specified a type of acoustic string and was told that they didn't carry the brand (which they actually had on the shelf at that time), and was then sold two different types of electric string. It wasn't until I opened the bags that the packaging revealed that they were electric. I very calmly and politely described what had happened, and simply asked for them to be swapped for the type that he wanted in the first place, which was hanging on the shelf right behind him.
An outsider might suggest that they took advantage of a kid who didn't know any better. But I didn't suggest that to the guy at the store. I avoided the confrontation. He just flat out refused and never once blinked.
The funny thing is that I recall being in there once before, and overheard him boasting to a customer about a very similar situation. He had sold something defective or incorrect, and was clearly in the wrong, but refused correct / replace. All for such minor stuff.
My business won't make or break them, but I'm obviously not the first dissatisfied customer. Amazon or Guitar Center from here on out.