I got a similar message yesterday. Used e-check in and then recieved an email telling me the rate went up $50! Took me over an hour to get the original confirmed rate honored (I had the printed e-check in confirmation with the original/correct rate on it). No one could figure our how to override the e-check in system, once it had made an error. The hotel finally manually over rode it. I am in my "suite" now. I sent off a pointed letter to the gold desk, no reply so far.