Priceline is the worst company I have ever delt with. They tell you lies then when you catch them they blame you.
I made reservations for a car and realized after they had been made that I needed to change the pick up time. Thats ALL I wanted to do. Priceline sent me an email saying and I quote "your dissatisfaction has been noted please do not expect any responses to anymore future emails because you wont get any" unquote. The rental company says a change would be fine but Priceline wont allow changes.
They say that the partners wont allow them but its the partner that told me they would welcome any change within 3 business days.
Priceline are liars and cheats, do not use them its not worth it.