Beware!! Recently while trying to book a Flight and Rental car on Priceline.com I ran into a bit of a problem while using their online site. I went through the system as normal, filling in my information and selecting an airline and rental car. It was at the confirmation page that I relized the dates were wrong for the reservations, so I used the back button on the their site page to go back and put in the proper date. After puting in the proper date I then used the foreword button to move ahead since all my personal information was correct. When I finally reached the confirmtion page the dates shown correct so I confirmed it, but when I got my confirmation letter a couple of seconds later I relized the wrong dates had been repopulated and was now booked. I called their Customer service to explain the problem and attempted to get them to change the reservation and keep a customer, but they refused to alter the reservation without me pay a fee. I refused and told them the error was in their site and they should be responsible and fix the reservation without charge, again they refused. I wrote an email to their customer service and they responded back providing me with a link to the confirmation notice. However the link only shows the confirmation page with the wrong dates, and not the dates that were shown on the confirmation page prior to when I clicked confirm. I have attempted to get this resolved by contacting their customer service via phone and email but each time they refused. I have since contested these charges with my Credit Card provider. Now even though I advised them in writing and verbally of the problem and advised them to cancel my reservation they still charged my Credit Card. After the Credit Card company declined their charge they rebilled it under the name of the airline. They obviously know of these system errors in their system, but I belive they are not corrected in an attempt to generate errors for which they charge their customers fees for changes and cancelations. Which is very deceptive!! If you decide to use their site beware of this behavoir and I would advise to go else where.