Faulty fridge design - Defrosting problem

We have had our Samsung fridge for about 3 years. Up till now it has worked well. Then about a month ago it started making the most horrible loud noises. Sounded like there was a very loud tractor in our kitchen. A bit of internet research revealed there is a DESIGN FAULT with the automatic defrosting system. Ice builds up around the fan until you hear the fan grinding on the ice. Anyway, I defrosted manually and the problem when away.<br> <br> A month later the problem is back. I can't defrost the fridge every month. So I phoned Samsung SA and after attaining my warranty had expired they recommended a service center and said I would have to pay for it. The service center said the repair would cost R880 !. They are fami**** with the problem. You can be buy samsung repair kits on Amazon. <br> <br> I feel that this is bad service from Samsung. This is latent defect that they knew about when ( or shortly after) they sold me the fridge. They should have contacted all the people who bought the fridges and fixed them free of charge.