I'm not the only one having issues with UPSsurepost!? My tracking said "We'll be in your area and will deliver your UPS SurePost package instead of the post office." and then "Delivered" but when I got home, I couldn't find it. Started panicking. Contacted UPS but they won't give me any details. I called Bestbuy and they said it was transferred to USPS and gave me the USPS tracking# but when I entered that into the USPS system, nothing came up. Even went to my local post office to see if they could track it but they said they don't have anything. So now I don't know if UPS actually did deliver and it got stolen or sent to wrong address, or Bestbuy is telling the truth and it's just floating around in USPS cycle somewhere.
I'm having the exact same problem. I had 4 shipments. One that did go to USPS from SurePost was delivered. The other 3 also had that "We'll be in your area and will deliver your UPS SurePost package instead of the post office." message and were said to be delivered Tuesday and I never got them. I e-mailed Best Buy last night and am waiting for a response.
Next time I am sending my order to my PO Box rather than my home address so if they use SurePost again, it will have to be delivered through the post office.