Anthony Friedman ebay scam Garnerville New York

I sold an item on ebay December 19th 2015,I shipped the item December 21st 2015 through USPS Priority mail,and the person received the
item December 23rd 2015. I have sold many items through ebay with no issues. The item that I sold to Anthony Friedman was a pair of Air
Jordan Retro 13 style Squadron Blue size 9.5 ebay item number 111853338698. I received a dispute about the item on December 30th
2015 saying that the item was not authentic and that the person Anthony Friedman wants to return the item. I have had no issues with
any other items or shoes I have sold on ebay.I send all of the shoes with there original box and original receipt which I purchased at
Finishline a major retail store. Anthony Friedman is running a scam in which he is purchasing shoes on ebay and putting in disputes to
get a refund back then sending back fake shoes and ebay is allowing it because there main focus is to protect the buyer even though its
not right. So now ebay is going to refund Anthony Friedman his money I am out the fees plus the 23 dollars it cost to ship the shoes and
I am receiving a pair of fake shoes back so then Im out the 190 dollars for the shoes. Could you please help.