Just say “technical issue”
It will put you on hold to talk to a human being
__________________
App. Sent: 08/31/2012
G-1145 Notification: 09/07/2012
Received I-797C: 09/10/2012 letters received
Biometrics Done: 10/04/2012
I821D&I765 Approved: 12/13/2012