Discrimiting conditions on Discovery card and vitality

I am puzzeled by how discovery say when attracting people to use their credit card, yet there is some kind of ************** in their conditions. I am a vitality member and I have a discovery credit card, based on my vitality status, I qualify for a discount when I book my flights, hotels and car rentals. I was told that I will also qualify for additional 10% discount when I pay my bookings with the discovery credit card, I took a discovery credit card for that benefit. Now I when I book the hotel, the additional10% discount for using discovery credit card doesn't reflect, I called the discovery call centre and this is the explanation I got: my claims for the medical aid are more than my spending on my credit card. The discrepancy here is that they check your 3months spending on your credit cards , yet they check 12months of your medical aid claims???? I gave birth a year ago and the medical aid claims were increased by that. Who can spend more than hospital fees on monthly basis? Now does it mean I can only benefit on discovery card only when I don't have children or when I don't give birth? I can only benefit from discovery card when I don't get sick? I can only benefit from discovery card when I don't get hospitalised ? Am I valuable to disco very only when all is well ? Yet am paying the rediculous interest rates, vitality, medical aid, life cover...all for what? Only to be recognised when all is well? I think the way discovery sells their products and their conditions are untruthful and have no integrity, they only benefit themselves.