Atlas Plumbing Co. replaced the flapper valve in the toilet and didn't install it properly. I had to go back and reinstall it because it was leaking. That was my first time doing business with the company, and the plumber was good--but I think his assistant had the problem. They were on time and respectful, and I would use them again. And, it was easy to make an appointment--I just called and someone picked up the phone.