Same thing happened to me. I apparently logged on using my confirmation number and Last name and cancelled my flight within the 24 hr period. The one thing I noticed weird was that it said something along the lines of: This ticket has no value.... and I thought this was weird. It was bothering me, so I decided to call CO and said that I remember in previous times that I had cancelled a ticket it said something about refunding the $ to the original form of payment. So the CSR asked me (several xs) if I had logged in while I cancelled and of course I was positive that I had. She looked into it and said that I was not logged in and that I needed to make SURE that I logged in or they do not refund you. And she did me the favor of reversing it and cancelling to my orig form of payment. And it must say or give the option to refund to orig. form of payment, if it doesnt then you are not logged it.