Why did my fridge die (stop getting cold), how do i fix it? And no its not low on freon, the coils are clean and...

And no its not low on freon, the coils are clean and and the freezer part still works. And the dial is not broken or turned too low. Also the neutral still comes on and the fan at the back still works. Nothing down in that is overheating either. I am totally stumped. Also who do I call? Should I phone an electrician or the heating and plumbing people if I can't take it fixed?
Missing the pin that holds 2 parts of...
Answers:    Empty it,unplug it,leave the door open for a hours of daylight.Plug it back in and I bet it will be fine.If not you will enjoy to call an appliance repair shop.Not an a/c shop.
Furnace Problems?
heres the deal, most fridges stay cold from really cold air from your freezer, there are vent from inside from your freezer to your fridge side, if your freezer is still freezing, it should be at about 2 degrees inside your freezer later your fridge should be cold, its only one unit,, the vent going from the freezer side to the fridge side are blocked or closed off somehow, find these vents and release them, mine are at the bottom under my meat holder in my fridge side, some are at top contained by back
My A/C at my house is leak!?
Try cleaning out the dust balls below the fridge. The best person to get is an appliance repairman (or woman) if you can't fix it yourself.