I have had the same experience with a FitBit order... ordered it on Aug 9th and still don't have it after 4 or 5 emails to Customer Service which gives me a USPS number that never updates.
I am going to cancel the order with Amex and if the fit bit shows up I am returning it to sender.
9374869903501127412241 - usps - you can feel free to contact USPS with this tracking information. Your order will be delivered tomorrow. This information was already posted.