Are you sure your purchase went through correctly? Look in your Purchase History page, is it there?
If it is, then the buyer had 2 identical items, which cannot be listed separately, at the same time because of the duplication rules, and now has perhaps listed the other ?
End of the day, turn to eBay's 30 day MBG policy written on every listing, and on link below, if you need to claim a refund for item not received or one for not as described.
https://pages.ebay.co.uk/ebay-money-back-guarantee/
@miniboy5
