As a Harrahs VIP I booked a room with the casino b...

As a Harrahs VIP I booked a room with the casino but they were booked to capacity. So they moved my reservation to a sister hotels the Hilton. My reservation was for a king size bed but at check-in I was informed that I would be receiving 2 queen size beds and if I wanted a king there would be an upcharge. It is unclear to me how this works. As a sister Hotel you would believe that the accommodations are the same. I do believe that the Hilton is taking advantage of the Harrah's customers with this upcharge