An unconfirmed order will never arrive.  Contact your financial institution to find out what they can see, and file an issue about a failed order with them.  
Hello, I recently bought (or so I think I bought) a new XPS 13 Plus on Saturday, August 6th, at 10:20 PM, but I have not received a confirmation email. The screen did say my purchase was confirmed though. I have tried looking at my Orders yet nothing shows up, I called Dell Support and they cannot locate my order based on my number. When I tried to speak to an actual human being they hung up on me within 2 seconds (no joke), I don't want to buy it again as I fear being charged twice, but I do need the computer before August 23rd (Expected Arrival Time was Aug. 10-17). Help Please
Order Never Confirmed