In answer to your response:
- no written agreement was signed with the hotel re. the flat rate
- card was authorised as guarantee against sundries, but not for them to take monies without my first checking bills. I expect to check the bill, bring up any discrepancies, then pay the bill myself as opposed to the hotel taking the payment automatically when a bill hasn't been presented.
Further, early on in our stay I was told that the room-rate would go up one evening due to high demand, and as we didn't want to change rooms/leave I agreed, but there is no record of my having been told the rates could fluctuate to such a degree, and again, until a flat rate was set in motion, they seem to have been going up and down at will without anyone being in contact.