Marriott and Prokard destroying their loyalty programme

This goes out to the Marriott International Marketing team and the Prokard Executive. You are destroying the amazing Prokard Membership and Loyalty Programme you have built up over the last 20 yrs. I have been a Prokard member for more than 10yrs and this year the new algorithm you have implemented to book vouchers on your Prokard Booking System does not allow us to use the vouchers at all even if you make hotel bookings 3 months in advance. This is clearly an unfair market practice for the payment of an annual membership fee of R1750 with no benefits in return. I will be lodging a formal complaint with the Competition Commission to highlight my concern if I do not receive assistance from you within the next 24 hrs.