I work for the USPS, and I want to let you know that sometimes the tracking info doesn't mean anything, and even if the preferred shipper might say USPS, FedEx, or UPS, your package could be delivered by any of the 3 based on local agreements between them. I ordered an Elite jersey last yr that was supposedly shipped with FedEx. After several days the tracking info showed it to still be in transit. I called and the person told me that it was dropped off @ the local delivery unit, and check with the USPS, as they were taking it from there. Being an employee, I went back in and sure enough, it was on a pallet of packages that FedEx dropped off and the post office was to deliver...
And yeah, this winter has been the worst here in the Midwest in the 21yrs I've been delivering mail. So bear with us, we'll get your stuff to you... Albeit a little later than expected...