i've not had this happen before and am looking for advice on how best to handle it. i made a transatlantic booking, and the reservation screen clearly said H Class with 150% against the miles, so it got booked. but then when it was ticketed, it had changed to I class. the difference is that H class doesn't need extra money to upgrade using miles and I class costs about $400. to say i'm annoyed is an understatement. trouble is i can't prove that the screen clearly said H when i progressed to confirm purchase.

what gives? and can anyone suggest a solution to this impasse with CO?