Fridge is not cooling down. Freezer is fine only the fridge. Plus the water dispenser - water is not that cold

These units like most fridge/freezers, actually cool the freezer first, then a damper opens that flows freezer air into the fridge side cooling it. The thermostat/switch controls the freezer, the refrigerator is controlled with a damper. The cold water storage tank is usually hidden in the bottom rear of the fridge, behind the vegetable bins, so if the fridge is not cold the H20 is also warm. I suggest you unplug the fridge, empty the freezer and remove the covers. Your issue could be a simple ice blockage of the air passage, or a stuck or broken damper control. Use Sears parts to look up a exploded view of your fridge. At minimum, you will learn a bit, and if you end up calling a service guy, he will know he cannot fool you and overcharge you.