Samsung Fridge Freezer need ongoing repairs

I had a Samsung side by side fridge. It began troubling continuously while in the guarantee period. Eventually Samsung offered me a new unit if I paid around R4000 for the newer model. I agreed to this and the new fridge was delivered. Now I am having the same problems with the new unit which is around 5 years old. Initially, I called a Samsung technical to repair it. He tried to take a short cut by bypassing the inside of the fridge and putting a condenser on the back of the fridge. That worked for around 4 months when the fridge stopped working again. Ever since then, I have called in numerous technicians to repair this fridge at great cost to myself. Usually it would last 3 months before breaking. Now however, nobody can seem to get this unit working for longer than 3 days. I now have a beautiful, mirror, side by side fridge, which does not work. Samsung, and suggestions ? This is terrible service from a leading manufacturer. I have now spent around R7000 in trying to get this fridge to work, to no avail. Really saddened and upset !!!