Google have opened their telephone support hotline for technical queries and issues with the Nexus One.
Please contact Nexus One support from Google at 888-48-NEXUS (63987). Open daily from 7:00 am EST to 10:00 pm EST.
IMPORTANT NOTE: You will be asked to provide your Google order number to speak to a customer support representative. Your Google order number is a 15 digit number which is sometimes preceded by a “G”. You can locate your order number in the following two locations:

