Dandy 8.8 fridge not working but freezer does Freezer is nice and cold but the fridge doesn't

Question

Freezer is nice and cold but the fridge doesn't work at all. I think the unit is only a few years old...Any suggestions?

My fridge freezer got very frosted up, so I defrosted it yesterday; it seemed okay when i turned it back on; made noises and began freezing again. The outside of the unit was hot.  But after a couple of hours the fridge was warm again - any ideas?