Upon check-in which was about 1030pm, I was advised that I had a smoking room and that I could up grade to a non smoking room for very little cost. The clerk there made me wait while he fidded on the computer in front of him. After a few minutes I told him that it was late, I was really tired and had to use the rest room, so never mind just give me what I alteady had reservations for. He told me not to go and that for just nine dollars I could upgrade to a non smking room with two beds. I paid him the addional cost and he gave me the room key. After checking out the location of the room I parked my car and went inside to inspect the room. After that I went back to my car for my luggage. My cell phone rang and upon answering it, it was the hotel clerk. He requested additional money from me. He said that the room would cost me more than he anticipated. It is after 11pm at night now. He wanted me to come back into his office and pay the money. I explained to him that what he was asking was wrong, bad business and unsafe. He was raising his voice in anger. He told me he works 24hrs around the clock. He said that he was not the one responsible for the short cash. I told him it was poor business practices to change the price the way he was doing. I complained about the treatment that I was receiving, about the service and that if he continued a bad review would follow. I told him, I would pay the additional money of now $15 during the morning hours when things were safer.