I stayed at this hotel one year ago and am still s...

I stayed at this hotel one year ago and am still so angry upon reflection of that experience. We stayed two nights and paid for 4. After many attempts at resolution, the hotel management and Sheraton refused to correct this mistake. I have done my best to avoid staying in a Sheraton again and will even avoid Frankfurt as an airport hub due this bad experience. It is inexcusable that the people who run this hotel are so negligent.