Bought something on the asset store, it got stuck on purchasing, and now doesn't show up and I'm out $10.

I bought the Ultimate FPS Camera on the Asset Store earlier today. It was stuck on “purchasing” for hours, and I exited Unity. Now it doesn’t show up and I’m out $10. What do I do, I want my money back, or the asset.

See this page, and use the email address listed for the Asset Store.