I’ve found away to contact recent buyers and they explained that they only left good feedbacks just so that they can receive a full return!
Most couldn’t get a full refund sadly due to eBays refund policy to sellers, if you send out so many refunds at a time your account will be band from selling things.
Most people say that after they left a positive feedback for a full return the seller never responded an by time they would the item would be no longer available so there’s nothing eBay could do to help!