help!!!! i returned a package on 6/29/2012 using USPS through my company's postage meter to Neiman Marcus and they have not received the package i do not have insurance on it and the mail clerk sent my package out with the stamp but i have no receipt what can i do the Bag is $731.00. i called Neiman Marcus and they still have not received the package and today is 7/18/2012. i do not know what to do the post office told me without a tracking or delivery confirmation nothing can be done. can someone please help me i feel like i am going crazy i cannot afford to pay for a bag that i sent bag and now its not there. would i have to pay for the bag or can i dispute the claim with my Neiman Marcus credit card?