You need to explain more clearly what has happened. (Unfortunately, it apears that any further info you may have added was editied out by the board moderators.)

Is this purchase recorded in your recent buying history in your "My eBay" pages?

If so, it will be a genuine account, not "fake". The seller could turn out to be fraudulent, but this is not the same. Provided the account is authentic eBay's money back guarantee to buyers will apply if you don't receive the item or it does not match the decription (assuming, of course, that whatever you have bought is not an excluded item such as a motor vehicle).

You can read about the terms and conditions of eBay's money back guarantee here:

https://pages.ebay.co.uk/ebay-money-back-guarantee/

If either the seller or the item has been removed by eBay, or you bought it from an actual fake site, i.e. pretending to be eBay, the position may be different.

It's difficult to help you further without more information.