I called Grand Oaks Heating & Cooling with my zoning needs and they gave me the proposal that we both agreed and signed. We also agreed on the installation date but they never showed up to get the things done. When I called them later they told me that that proposal is not valid and raised the price on me by around $2000.00. I just wasted 2 months of my time trying to get hold of them. Now when I called them they never return my calls. I definitely don't recommend them to any one because of their unreliable services and worst customer services.
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