Poor customer service

I would like to log a complaint against Makro Springfield Durban. I bought an AEG refrigerator and freezer at Makro Springfield Durban in January 2019. In November 2020 I discovered rust on the door of the refrigerator and in December 2020 I discovered rust on the freezer. I reported both cases to Makro and was referred to AEG, who wants to replace the doors. There is a 36 warrantee on defective material. I would like an entire replacement or a refund of r17000 which was paid cash for both appliances. Since December AEG is waiting for stock and told me out of goodwill they are replacing doors. The doors are supposed to be stainless steel yet they are rusting. Kindly assist if you can. Thank you Ronelle