I completely understand your frustration.
My recommendation is to update the BIOS to the latest one (if you haven’t) as part of the troubleshooting.
Since this is a new product I would recommend you contacting the place of purchase or your Intel® local support for a possible replacement.
I just would like to verify some information which is the AA number of the NUC you have. Please do not send the Serial number just the AA number in a white sticker. I would like to verify this part number from our side.