The Money Back Guarantee for buyers, which is seen in every eBay listings, offers clear information about what to do if/when a transaction goes wrong. ALL buyers, as well as sellers, should read it, preferably before beginning to buy or sell on eBay.
When you receive an item that's not as described (defective item), you have 30 days after receipt to go to the Resolution Center, bottom of any eBay page, and open an item not as described case there. Be sure to follow the prompts and escalate as soon as you are able to do so.
