Oh god, I had a similar issue with a buyer. I think that people interesting in pony collecting should have to pass a tutorial before they are allowed to purchase from sellers.
Ridiculous.
Oh my goodness this has me laughing...because its so true. People that are new to collecting or have no researched things well can cause so many problems. And what ever happened to contacting a seller and finding out what was going on first? Such a silly thing to leave bad feedback for too. I mean even if I found something that wasn't supposed to be inside my pony I wouldn't leave a negative over it...I am so pleased they were willing to change it. yay for you.