Like repoint5 said, eBay is a private company with their own rules. They are responsible for enforcing their rules and your friend has not recourse outside of eBay.
As oil pan 4 said, this is likely a result of people clicking "report this item" on your friend's old listings. The good news is finished auctions only show for 90 days on eBay so this should clear up over time. (You can find them on internet searches longer than that)
If your friend is just fed up with the hassle he can go to another site.
|