ABSA vehicle finance

I got into an accident with my previous vehicle and my insurance wrote off the car. Upon requesting the settlement amount I received a message notifying me that i will get a cashback should I finance my next vehicle with ABSA. The settlement amount was paid by my insurer and there was a shortfall that i had to pay. I queried the issue of the cashback and was told that I will get it upon completion of the settlement, for the previous car. In seeking finance for my next vehicle, i did not look at other finance houses as I was looking at the cashback and the fact that i had financed with ABSA before. I have completed and settled the previous finance and the new one is already active. I am now told that the cashback only applies to those who settle their debt personally and not via an insurance.

This is unfair and wrong as it influenced my decision making on taking further finance with ABSA. Now that they have the finance agreement they do not want to pay the cashback. Please assist in clarifying this matter as i feel that i am being ******.