ebay have no idea what the product is. They even state this in the User Agreement...
"While we may help facilitate the resolution of disputes through various programmes, eBay has no control over, and, unless expressly provided, does not guarantee the existence, quality, safety or legality of, items advertised; the truth or accuracy of users' content, listings or Feedback; the ability of sellers to sell items; the ability of buyers to pay for items; or that a buyer or seller will actually complete a transaction or return an item."
As for what you could do. Well, what did you do? Did you try this page?