Discovery Insure Vitality 65+ misleading.

Last year Discovery Insure advertised to members that their premium payback every year could be reduced by up to 50% if the 'Diamond Status' and zero Vehicle Claims were achieved consistently throughout the year on the 65+ program, for members over 65. I have achieved Diamond Status consistently throughout the year and have had no claims whatsoever. Discovery Insure has now informed me that the reward for achieving both goals will be that my vehicle inrance premium will not be increased from last year to this year and that I would receive a cash-back payment on the Vitality Drive Status if I drive less than 10,000 kms per year. This is clearly not on and is deceptive in it's incentives and not accurate or true to the adverti*****t. I want my 50% reduction on my premium please Discovery Insure