Originally Posted by virtualtroy
Really? When I tried doing this with BA for the three remaining segs I've got on my ticket they refused to deal with me, stating that it was AA's problem.
BA shouldn't do this. Call them, tell them you have an open ticket, to be booked in D, A or L class and would they be so kind as to book these.
I think the reason for not 'helping' you is that there is no way they can collect the service fee for doing a phone booking as you already have your ticket!