I personally think you're lucky it was sent in a box... Usually they just put sticky backed white bubble wrap shit on them and send them out... >.< If I was you I would contact them for some kind of resolution. If you don't get anywhere with that, make a charge back to your credit card and just chalk it up as a learning experience and in future I would advise contacting a UK member to assist with item forwarding. It's not convenient or as cheap but it avoids all kinds of headache like this.
There are plenty of members on this board who would help with UK forwarding.