Originally Posted by
christianj
On 6/4/07 I called LH and booked a fully refundable BC ticket to Germany. The $7500 cost of the ticket was charged to my AMEX card on 6/4/07 and then again on 6/5/07. I called AMEX to make sure one of the two charges was not a "hold" or "pre-authorization" charge and they confirmed it was indeed double charged. ...
I would just give order to Amex to cancel the double booking. It is not your job to help Lufthansa out of their IT- and accounting chaos.
Usually, Amex will credit the amount immediately, recharge it to LH and ask them to show cardholder authorisation for both charges if LH might complain.