Refrigerator will not cool, but freezer is working

My refrigerator will not cool, but my freezer is working. I have cleaned the coils, unplugged it for about 30 min and plugged it back in. The fan is running - the compressor is HOT and the coils are warm. The compressor isn’t making any noise at all. What could be my problem? I hate to call a service tech if it is going to cost as much as a new one.