Originally Posted by frenzie01

Of course "reasonable" means different to everyone.
The Op wanted a full refund which made me smile.
If it was me I would want a full refund and free flights for life.
But then I would come to my senses and accept the free flight upgrade.

For one reason or another, the Op flew BA this time. If he has a free upgrade in his bag, I guarantee you he will fly again. At a bargain price. And the seat would work that time.
And he would've been happy.