Refrigerator model FRS6LF7FS which is not cooling in the freezer and refrigerator as well What is happening?

Sounds like either the compressor is not working or the refrigerant has leaked out. Either way, you'll probably need to call for service or - if the unit is old - replace it. But do check to make sure the doors close properly and are not blocked open. And review your owner's manual for trouble-shooting. There may be a simple solution that has been overlooked. If you have food or refrigerator thermometers, check the temperature in several areas to get a good idea of what's going on.