Thank you for using Just Answer.
We need some more information to give you better answer.
Is the freezer cold (and the refrigerator is warm)?
If you go to the back of the unit, can you hear the compressor running?
If you don't hear the compressor, do hear anything else there?
Do you see ice anywhere? If so, exactly where?
How old it this unit? What is the model number? This is located inside the fresh food compartment on a side wall.
Your welcome. Did he locate the problem?