Originally Posted by
warakorn
I would just refuse to pay that balance. If you inform the card issuer beforehand (noting down the reasons: paying for a cancelled flight) about your refusal, your card issuer is not allowed to downgrade your credit rating. I doubt that Amex will test its position in a court of law.
Wow, poor advice! Who do you think will win that battle when AMEX commences debt collection - AFTER downgrading the credit rating? There is no way the OP can refuse to pay what is owed to AMEX on the grounds that the OP believes himself entitled to a chargeback. AMEX can easily refer the OP to take this up with LX instead (and demand the OP to pay what is owed to AMEX).