I used to be choice diamond, and choice was my favorite brand in their segment. Once they gave me some aeroplan miles instead of CP points, even if I never gave my AE number at the hotel and carefully selected points in my reservation. After some email, faxes... they never gave me the points (it was the second stay of a stay 2, earn 8000 points promo).
I never stay at one of their hotels since, except for a free BRG night in Paris...