Maytag refrigerator not working correctly

Temp in the freezer kepts getting above freezing and the compressor keeps getting hot. I have replaced the capacitor/relay over 6 times and every 3-4 months it starts everything all over again. I have cleaned the coils and removed the dust from everything. Even had a service tech come out and was told it was the same thing the capacitor/relay. What could be causing these parts to go bad so soon. I would think they would last longer than 3-4 months. Please help me.:mad:

I had the model number incorrect on the original post. The correct model number is PBF2255HES