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?