Unhappy in GTA 2009

I purchased a tankless from Mr. Tankless, and Active Temp Control installed the unit. The installers took 14 hours to install my water heater, and left their shoes on during the install - my entire house was muddy. There was no water or gas during this time, and they got upset with ME when they couldn't use the washroom because there was no water!! They only cleaned up when I forced them to after they were about to leave - and they barely cleaned. They left their garbage on my front lawn. The 3 men installing the unit were rude to me and my family - they were yelling and screaming at each other, with a lot of swearing. My young son heard it all. I would never recommend this company to install anything. We have had a lot of renos done in our home and everyone else we have had come in has been professional and done great quality work. Don't buy from them - its not worth the headache. When I called to complain, no one returned my call or my questions from either Mr. Tankless or Active Temp Control Inc. The actual product has been in my home for about 6 months now, and it works great. Water is consistent and hot, and our gas bill has gone down dramatically. Too bad the install left such us with a sour view of the product.