Tracking number pretty much has all the info but I would also get sellers name, add, phone number just to be on the safe side. You should already have this info but If not I am sure the seller will give it to you.
He might be the one that has to file the claim though since he is the shipper not real sure but a quick call to the fed's and they will get you from point A to point B.
They said that tracking number was to an address down the street to a Sherry Gross... I want to find the address and it doesnt excist... the wired part is that the tracking number and addresss was right on the sellers reciept and My name is Payton Grose but it wasnt even under my name?