This hotel is very shady and misleading with rates...

This hotel is very shady and misleading with rates. I reserved the room for a conference I was attending at the hotel from October 5th - October 8th 2017. When I reserved the room I was told I would receive the conference rate. When I arrived at the hotel for check in on the evening of October 4th I was given a much higher rate. I informed the front desk of the rate I was quoted. The front desk attendant told me it would not be a problem to get the rate, all I had to do was have someone from the conference come to the front desk the next day and add my name to the conference list and I would get the conference rate. So, I checked in...only to find out the next day that the hotel was not going to honor the conference rate. The reason was stated "because it was booked after a certain date". I informed the hotel I was given the conference rate when I reserved the room on September 9th. I then called the Hilton Double Tree customer service number only to be told... because I had checked in it was out of their hands and up to the hotel to honor the rate. Had I know on check in I was not going to be given the conference rate I was quoted when I reserved the room I would not have checked in until the matter was corrected. Again, the hotel was very shady and misleading with the rates.