Turns out there’s something called the Amazon A to Z guarantee that guarantees if a third party seller doesn’t acknowledge your issue within 3 days you can contact them and they’ll sort it out. We had contacted the seller who had “escalated” the issue but did nothing with it. After the three days, we contacted Amazon. Next thing you know there was a UPS shipping label ready to go. UPS picked the massive bookshelf up. We did eventually get our refund. Still a pain.. I ended up getting the chalkboard from someone else.
