Open a claim with eBay first.
Watch him flail around.
If you don't get your game, leave negative feedback.
If you do get your game, leave negative feedback anyways because he's a f*cking moron.
I had someone do that shit to me when I won something for like 40 bucks when it normally goes for around 200.
He was like "oh there was a fire in our shop and the items were destroyed. I have to refund you." and I was like "Oh, that's cute. How come you relisted the item using the same pictures with a 175$ buy it now?"
Joke was on him. He ran a book store not far from me, so I drove to the store and was like "Oh hey, I heard you guys had a fire in here. Was it bad?" and the person working was like "What? No? There was no fire."
So I was like "oh ok, well, I am here to do a local pickup on an eBay item I won."
Got my shit for 40$ and went home and told the guy thanks for the local pickup. Pound sand. Dick.