Originally Posted by
BA6501
They should not refund the difference between the cabins - they should refund 75% of that segment, net of taxes. Search FlyerTalk for the Mennens formula. Easiest to ask IB for the refund calculation directly, but do your own math and see if it's right. And if they don't budge, log a claim with AESA.
Is this true despite the change happening much before the two week deadline?