Houdini's Grave Tours

I booked my reservation through Expedia for a room with 2 queen beds and paid extra of course for 2 beds. I Checked in and went to the room, it only had one king bed. Went back to the reception and told them I booked 2 beds not one, they said this is what Expedia has booked for you and I have to call Expedia to fix it for me. I called Expedia and they claimed they talked to the hotel. Talked to the receptionist again, she said no one has called. Called Expedia again, talked to their supervisor. He said both rooms are exchangeable depending on availability. I asked why did I pay extra for the second bed, the supervisor wouldn’t answer. I asked for refund for the extra money I paid, my request got denied. I sent the first day of my trip back and forth between Expedia and the hotel to get this resolved, but unfortunately nothing happened. I don’t know who was lying between the 2 Expedia or Riu hotel??? I basically paid a lot and only got one small room that looks like a box with one bed only.