i have account in ebay and i sell many items cheap items from china, good proudects but i have Rarely problem with buyer that get wrong items, i have now guy that have 3 feedbacks in ebay - new buyer, he give me negative feedback , Because he says he received something else, and a mistake could happen, but we give a full refund immediately or send a new product. Is it legal buyer given negative feedback without sending a message before? This is acceptable on eBay? i don't understand what going on in ebay, All buyers are pleased with our products, and rarely reaches problematic buyer who knows nothing about eBay, and does not understand the meaning of negative feedback. If anybody has any idea how to solve the problem or minimize it I would be happy to get answers.