Open a case, that sounds like they deliberately listed the items with a different picture, its like selling a regular flat foot pony but using a picture of a piggy pony to jack up the price. It's NOT the same thing, so don't use the pic.
I had a similar experience years ago with a seller, I purchased a care bear, and what was in the picture was totally different to what I got in the mail. It was the same "bear" but a different type (friend bear, but not the one pictured) which I had a hard time explaining to the seller wasn't on. I wound up getting a refund because it wasn't as described, the seller did agree though, didn't bother stuffing me around.