Unfair application of discount benefits through the app

Sanlam has a reality program which offers wonderful benefits but their app has not been working for ages , what’s the point. I use the benefits for booking movies with NuMetro which frustrates me a lot. When tickets are booked the system applies one discount despite number of tickets purchased and I believe this was done deliberately to maximise on their profit, I thought two tickets and one has a discount and another does not have meaning I’m ********** a benefit and money. This need investigation and updating their system