I just got the discount! Here is what you have to do:
Call 877-453-8824 (the migration dept)
Ask for the Military.com members discount. It is listed under the name MONSTER WORLDWIDE.
The corporate node is 6547494
You will need to tell them you are a Military.com member and they will ask you for your Military.com login name.
That's it!!!!!!
Enjoy 15% off every monthly bill

Did you have to agree to or sign a new 2 year service agreement to get the discount. I have been a T-mobile customer for years, and thus have no existing long term contract. They have a past habit of requiring a 1 or 2 year new service agreement if you change anything on your service plan or upgrade/change your phone.

regds, Bob T

most cell phone carriers offer a military discount, which included spouses. I have AT&T and get a 15% discount on my bill. All I did was call customer service and they walked me through it.