It's not eBay faults, but their system is rather difficult to have an actual human being look into the details, besides, the amount of time involved for someone to investigate far outweigh their cost. But as a rule, is to buy expensive items from a more reputable seller, such as a brick-and-mortar store where there is a guarantee that is worth is weight in gold. Sure, it might cost more, but it certainly can save you time, money and headaches. As @bonjourami said, file claim against the credit card, and seek your item in other location.
