I looked into it and you have to file for a refund 3 days after the auction closes. I will be nice and not dispute the refund if you file for it. I'm just not that kind of a person so it is up to you if you want to file for your credits back.
Just remember it is up to you to file for the credits back and you have to do it no earlier than three days after the auction ends. If you don't do it then I am definitely not going to. Next time be sure you want what you bid for, most people wouldn't give you the credits back. Sue