heater blowing cold air when turned on

We just purchased this car over 3 months now. We are starting to have very cold nights due to the change in season. I fear that we won't be able to drive once we start the winter season for fear the windows will become frozen and seeing out of the windows will be next to impossible. We paid 9,000.00 for this peice of metal on wheels and will not have the 1000.00 dollars to repair it because of faulty workmanship. I hope Chevy will have the heart to do whats right and make sure that we have a safe vehicle to drive and to keep Chevy in business and do whats right for thier loyal customers and fix this problem. Chevy, bankruptcy can happen to everyone, including you! Your former loyal customer.

Here I am again to gripe again & this problem is probably the worst so far & is why I am even on this site to begin with. My heater has stopped working altogether. I started having some problems a few weeks ago when it was taking what seemed like a really long time for the heater to get warm. Last week it was still blowing out cold air & I was at a stoplight & when it was green & I put my foot on the gas, it felt like a puff of warm air came out & then it got cold again. Tonight, I had to wait 20 minutes with my window down & defrost on high (with cold air coming out again) for my car to get as cold as the outside (35 to 40 degrees) for my window to clear up so I could get home because wiping with a towel only seemed to make it worse. I'm about fed up with all of these problems, especially since I only have 5 more payments left to pay it off & I can't afford to buy a new car & I can't afford to keep pouring money into this one.