Maybe a bit late since it appears you already got the lens from your shipping handler, but.. the best thing to do is to always inspect packages before accepting it and before signing any documents that you received the item. If there are any damages, you and who ever is handling the shipping should fill out some documents, leaving you with documentation that the box was damaged when you got it. Then - if the actual lens is damaged - it will be much easier to get your money back. Most handlers have good insurances covering any such losses.