Welcome to the Board!
You are trying to snag a reservation during one of the busiest times of the year.
Given the quirks of the on-line and phone-in reservation systems, your only hope is to use a travel agent who knows how to work the system.
Even then, it's a long shot.
If anyone can help you, it's fellow Fiend Jason aka "The Man," http://www.fortfiends.net/profile/2851-katman1356jason/
Try him.
He's your only hope.
TCD