Ripped off
Your tracking info SAYS it's insured so file a claim. And buyers, please don't automatically ASSUME that everybody is about to rip you off.
BTW, that once happened to me with Fedex and an 8 3/4 rear. The rear chunk broke out of the packaging and they delivered an empty box. I refunded the customer's money and filed a claim. In addition, I sent Fedex a pic of the part and asked that they send it to every depot along the scanned route. Sure enough, one of the Fedex warehouses had my gear chunk setting in their office with no idea what to do with it! I got it back in good condition thanks to the email with the picture.