Don't worry about it. Negative feedback means nothing. I have been on Ebay for 7 years, I'm a Titamium Powerseller with over 40,000 feedback. When I first started, I got so upset at Negative feedback. eBay changed the rules so only buyers can leave feedback. Sellers cant leave feedback. I soon realised it all means nothing. eBay have made feedback worthless because buyers can leave negative feedback for no reason. Even if the buyer is at fault, they can still leave neg. Therefore the feedback system has no credibility.