Reliance Home Comfort

I installed a brand new carrier Furnace and Air Conditioner (top of the line based on the Sale Rep claim). We had old furnace and in fact we did not have problem with it expect high bills. Anyways, one day after installing the new equipment, our basement got flooded since Reliance did not properly install the drainage. I called and they came and fix it although they were hesitant. I told them the way I wanted it to be drained with NEW piping, not old existing piping. Then I was promised to get a rebate of $650, but they processed $250 for me. I have been struggling with them now for 3 months, and no hope, they do not fix it for me, which is my right. Now it is 3 straight days we do not have heat, I called on Friday early morning, and they were supposed to come on Friday between 10 t0 2 pm, no one showed up and no one called. I called yesterday, again no hope. I called today, I have been waiting and waiting and waiting and freezing and freezing, with NO HOPE..... I do NOT recommend Reliance at all, they are NOT Reliable and I am NOT comfortable at all. Hopefully, someone down the road can help me.......