Did not receive order as advertised - Changing the description after the fact

I ordered Sleeping Beauties by Stephen & Owen King on 27 September 2017. I specifically ordered from Exclusive Books because they advertised it as having one of four special edition animals embossed on the front, meaning that it was the first run of the first edition.

About two weeks after ordering they changed the description of the book by removing the mention of the special covers. I thought nothing of it at first. I received my book today (5 days after the estimated delivery date) and surprise surprise, NO SPECIAL COVER. In fact, it wasn't a first run at all, but a FOURTH! Why did I bother ordering from them then, especially as they asked more for the book than other sites???

I called to ask about the problem, but they could not help me because their website is offline (something that happens a lot by the way). They could only tell me that they can refund me and then I have to order again IF they have the correct edition, but they can't tell me how much it will cost. So I guess I'm going to suddenly have to pay more for something I ordered before they changed the description.

I feel like asking for a refund and ordering from another place (even if it's still not a first edition) just so they won't get any of my money. I have been a Book Fanatics Club Member since forever, but I don't think I will spend any money on Exclusive Book EVER AGAIN!

I am devastated as I have been looking forward to this book for months, just to be disappointed by false promises. And they will probably get away with it too, because I did not screenshot the first description, as I did not think this would happen.