Do you have Bitcoin address set in your profile where to send refunds? If no you must be receiving notification email to do so.
It is strange that you were not able to find how to contact Centraw support directly. The website duly has "Contact us" section.
P.S. And also for all you guys, If you want to share your images DO NOT USE bloody imageshack. This useless service displays only their stupid frozen frog for the half of the world instead of the image you want to show. There are tons of other more convenient and easy going websites to upload your pictures.