Absa vehicle and asset finance no help in resolving complaint about faulty vehicle they financed

I bought a vehicle in March 2021, financed by AVAF, that was defective from the start. The dealer has dodged responsibility. I complained to AVAF and they have been no help at all - completely misunderstanding the complaint and closing the file based on a clearly erroneous finding by MIOSA, referred to the NCC. They say they can't do anything because I referred the matter to the NCC. That does not make sense to me. Surely if AVAF is financing a vehicle, they would have some interest in the vehicle working as it was intended to work when it was sold to me. But it seems not. I am very disappointed, to say the least.