My refrigerator freezes my food solid


I have set the settings to the warmest they can be and the refrigerator still freezes everything solid. I have a 2005 6.5  Kenmore Elite refrigerator that freezes my food.  I've set the controls to the warmest but it still freezing my food.  Thinking of calling in a handyman. My approx. 10 y.o. Kenmore freezes everything that stored at the back wall. The rest it all right. Any ideas?

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