Endless problems with National Luna fridge/freezer

I purchased a fridge/freezer from Outdoor Warehouse in Rustenburg in 2016. In the same year after barely any use, the unit was sent back to National Luna for repairs. And since the first repair it has been sent back several times with the same issue. The unit is stored in a spare room and is maybe used once or twice a year when camping. The rest of the time it might be used in the house, but not at all used like camping fridge/freezers are put through the paces and taking a beating like the manufacturer claims they can. The unit is still basically new, but was sent back again last year. Now National Luna sends me a quote of R5000 for repairs for something I have barely used. Poor service and according to my experience not worth the money if the product breaks with minimal use.