Mike
Here is something I did the other week. I could not get a straight answer from them, so I got my agent to book me 2 tickets in WBC. She then booked me another 2 tickets in economy. I then got the number and told the help desk you will see I already have my seats in WBC and I want the ticket for economy upgraded as whilst we were talking my agent cancelled the WBC reservation.
Confused the hell out of him at the helpdesk, but did the job