When a refrigerator not cooling or freezing the repair can cost $100$1000. Whether it’s LG, Samsung, Whirlpool, GE, Frigidaire, Kenmore or any other brand, the Sealed System is the most expensive to fix. If compressor and all fans run, you can measure the temperature of Condenser Coil, and it should be significantly higher than the room temperature. If it’s not, the fridge maybe not worth fixing.