Capetonian, You can choose not to read my posts and choose not to contribute. Also there is a chap on Question Time tonight who you might find shares your approach to other nationalities and cultures so make sure you tune in.
Bealine,
Certainly in BA's case, no ticket agent would reinstate a booking without recalculating the fare and recharging the new amount - in the present climate, you'd probably end up on a disciplinary if you waived the fare rules!
So I assume you would charge the difference? What if the new fare was less, would you process a refund? Or does it only work one way?