95% chance the phone system will redirect you to a general support line, where an agent will tell you Office 2007 is retired and cannot be activated.
If you are looking for a "new" confirmation code because yours was rejected, the issue is usually not the confirmation code, but the . microsoft office professional 2007 confirmation code new
: Once verified, the automated system or a representative will read back a Confirmation ID (broken into blocks A through H). 95% chance the phone system will redirect you