I will tell you the reason as to why they don't let you...You purchased transportation from point A to point B, you gave them your credit card and that is the final sale. Basically you signed a contract. If you do not fly that causes spoilage, and so on. Meaning they have a seat left open that you were supposed to fly in. So in order to make up the money they have the right to charge what ever they want just like any other business, right? I think so, its a fair trade. Look back remember when ticktes were either use it or lose it.....