I had a Mach 1 order do that back in July, but after it sat for the week, I filed a "Where's my stuff?" tracker, and it miraculously started moving again. Might be worth a shot, if you haven't already!I have an order from Mach 1 sitting in a USPS distribution center now. Has not moved in a week. Last time this happened it took a month (to the day) to receive... arg!