402-323-7830. It shoudl be on your notice letter.
Thats NSC\'s number (for AVm as well speaking with an IIO).
Its really tough getting in during the day, you will always get "engaged" tone, but if you have to speak with an IIO you have no other option but to keep on trying. My wife once was on the phone for almost 2 days. However other times I have called, I had to wait on an avg 30-45 mins.
If you just want to check your status, call after 9-10 pm anyday.