グランド・ジャンクショ​​ンのホーム2スイーツbyヒルトンホテル

BUYER BEWARE - I booked 2 rooms at this hotel back in January for 2 nights in May using the Semi-Flex rate, which allows cancelation/modification up to 5 days before your stay. I needed to cancel 1 night of my 2 night stay and the price was going to increase from $267 to $392! I am a loyal Hilton diamond member (for 23 years) and I called the hotel to see if there was anything they could do about the significant rate change. I was direted to Manager Jennifer Sheppard who told me there was nothing I could do. I told her that this seemed like price gouging. She proceeded to tell me that I was yelling at her (and my tone was completely civil) and that if I continued, she would discontinue my business. I asked her if there was anyone else that I could talk to because this practice should be illegal!! She said that there was a 2-night minimum; however, no where in my confirmation or initial booking does it state that. When I continued to explain that I felt that this was unfair, she canceled both of the rooms without my authorization. I have never experienced this treatment or such a hugh price increase for a reservation. I am wondering about Hilton in general - is this their new MO?