For the policy of DSR (Detail Seller Rating) have changed, so not only negative feedback but also open case will bring big harm to seller’s DSR, here I hope buyers can send message to me before you want open case or leave negative feedback, I will responsible for all my items, any time you bought from me, if there is something wrong with the item (just like long time not receive item, quality problem, or any other problem), just send message to me, I will reply you within 24 hours, and I will find a way to solve the problem make you satisfied with the transaction! If you find I did not do what I promised above-mentioned, report to Ebay service, I will give you at least two times compensation!!! Thank you very very much for your cooperation!