Well...this is the email I got after hanging up with their rep:
I have reviewed your request to participate in the Sprint discount
program through AOL Sprint Affinity Agreement. I am unable to process
your request because your account is currently set up as a business
account, and only individual accounts are eligible.
If you would like to have your account changed, please visit any Sprint
store or contact Customer Care by calling the number on your bill or *2
from your Sprint phone.