Unfair practice on Drive Well insurance

I have cancelled my Discovery insure policy, due to reasons which I don't need to disclose at this stage. You pay your policy in advance which means I am still covered till the end of March, which I thought included the Drive rewards too. You are being allocated 25 points a day, which of cause can become less based on your driving behavior. What I noticed was , when I cancelled on the 8th March, I no longer received the reward for driving well., which I think is a *******. I called the call centre and was advised the points I forfeited the day I cancelled the policy.