This is NOT chat!!!!!!!!! This is breaking news! There is an honest to God Harley Davidson motorcylce listed on my account for sale which I did NOT post! You heard it here on FR first! Fix the category!
Somone may have hacked your ID and password. I had a problem with mine when I got an email telling me to update my info or else I'd lose my ID. Unfortunately, it was one of those fake emails where they record your keystrokes, and when I logged in to verify my info they stole my password. Something similar may have happened to you.
What's the starting bid?
Does it have a low reserve?
(Seriously, good luck in getting this straightened out.)
However, I sure wish that %&% Fender Amp I won and paid for a week ago would ship!
(someone's gonna get a baaaad feedback comment)
Then log out fully, login again using the new password.
Then delete the item for auction, report the fraud to ebay via their "Security Center"
If you had credit cards tied in to that account, you should assume that they have been compromised.