Sellers should know this one..I hope!

[egyptian-shop]

Posted an item by large letter on 8th May. Last night a dispute was opened for INR.   I refunded as I had no proof of postage.   I have just checked feedback left by this buyer,  of 19 feedback left, 14 of them are either negs or neutral for item not received!       

Regards

[clarry100]

EBay won't do anything... yet.
Raise a report with The ACORN.
Once you have a reference number then phone EBay and ask to speak with a supervisor. Remain calm in the face of adversity and explain what you are doing and the clear evidence you have. When they know there is an investigation under way outside of themselves you may get more action.