SuperTech HVAC Services, Inc

Two months ago, SuperTech HVAC Services, Inc gave me an estimate and then installed an AC unit at my home. I advised Mr Z that my home was just over 2,000 square feet. It also gets direct sunlight at the front of the house. Mr Z did not adhere to recommended standards and installed a unit too small to adequately cool the house. The thermostat is set at 72 and by afternoon the temperature of the house is 76. Their service technician, Gary, came out and his suggestion was to move the thermostat which would do nothing to cool the house. I consulted the company that I have a service plan with and they noted that refrigerant was low so added one unit. That did not solve the problem. The unit is simply not the recommended size to cool my house. Mr Z made an error in judgment and I would like the unit to be replaced with one of recommended size to effectively cool my house.