The fact that the hotel changed the wordings and T&C after the booking to make my plan "illegal" is all I need to go forward with pursuing this. However, I will not stay at this place for fear of "retaliatory" actions on the hotel during the check-out process. I will instead seek a course for compensation but keep it reasonable. If it does not work out, then I will make a formal complaint to the appropriate regulatory agencies. I am more measured in my response as I like SPG generally and I think this is more like an isolated issue then a program issue.