Air Quality Dunrite

Up until recently, I was satisfied with their regular furnace and air conditioner maintenance. The company was bought out in November 2011. The company gives a 4 hour window for service calls. They have had to come to our place twice in the last two weeks. Not only did they not arrive within that 4 hour window, they also failed to call to tell me that the repair man would be late. When I called to ask where he was, the rep was completely unhelpful. I was put on the phone with a manager who was unbelievably rude. I am looking for a new furance and A/C maintenance service ASAP.