Very flawed rewards system.

Their Ebucks rewards system is very flawed from a consumer point of view. They regularly look at how it will benefit them, not how to customers will be incentivised. So it looks very much like they are doing all they can to subtly reduce the rewards structure by re-structuring the manner in which they give awards. I'm very unhappy because last month they said I earned only R2 per litre instead of R4 per litre because I had bought R100 petrol from another garage, not Engen. So I became more careful and made ALL my fuel purchases from Engen in order to qualify for the R4 per litre incentive. However, they shifted the goalpost because now they say I must have an finance account from Wesban**** How many times are they going to mislead us???