Jenn Air refrigerator erratic temperatures, changing readout, freezing food

I have a Jenn Air jfc2290rem00**Problems:** Food is freezing Temperatures are erratic, varying from 29 to 40 degrees* Icemaker has stopped workingTemperature control is set to 38 but sometimes reads 40 on fridge.Thermometers in fridge (I have three of them) read varying temperaturesFood is freezing and has to be thrown out.Thank you!