Do as Stawks said and open a dispute for not as described. You only have 30 days from the last ETA to do so. If the seller wants it back, they have to pay the postage to get it back.

I would also be getting onto eBay and getting the feedback they left for you removed, as it's a violation of eBay policy to leave a false positive feedback, plus they have disguised a foul word so the bots wouldn't detect it.