Tried to book a flight through Priceline.com. Gave me an error saying that it was unable to book the flight. So I tried again another 4 times. Then went to Frontier to book the flight worked like a charm. I received a confirmation number though Frontier. The later when I checked the email. I received one from Priceline.com. They had charged my account. So now I have 2 sets of tickets. I called Priceline. They told me that they did not have any issues with their system. They also told me that they could not do anything to help me. Basically all Pricelines fault yet they will not refund my money. They told me I need to have frontier refund my money. In my opinion, it is not frontiers fault, and Priceline should refund me.