Priceline.com No Refund of Accidental Duplicate Reservation, Internet

i had been a long term user of Priceline.com. I needed to find a hotel in Charlottesville, Virginia for next October, 2011.  I looked through all my paperwork to make sure i had not made it previously, and could not find the print-out (which i always keep in my office desk drawer) of the reservation, so i assumed (wrongly) i had not made it.  As that is a busy time in Charlottesville with UVA Football games going on, i hurried to make the reservation in May, 2011.  i was able to find a Days Inn for one night at a decent price, around $130.  I made the reservation.  A little later i found the reservation i had made previously, the printed page had fallen behind my desk. 

It was for the exact same date, same hotel, and same price.  I immediately called Priceline, and asked for a credit to my credit card for the accidental duplicate reservation.  The first person said no.  I got a manager and he also said no - it is stated in their T&Cs that no refunds are ever given.  I explained i was a long term customer and that they had plenty of time to fill this reservation.  I explained they would lose a long term customer and that i would also dispute this charge with my credit card company if they refused. He again refused. I attempted to email others at Priceline to get this resolved favorably - again no budging from their terms and conditions even for this clear accident. It is still under dispute, but i advise all who might use Priceline.com of this terrible policy.