Slightly off tipic, test your cell phone to find out if it will work in alarm mode even if it is turned off. With my Motorola razr, the alram works even if it is turned off.
I also had NW call me at 6 am with notification of my non-upgrade. Not really their fault. I had notifications set to call at 9 am (Detroit time), but I was in Arizona, so it wasan early 6 am autocall.