Need A Plumber Canada

I had a water leak from the upstairs tub. The technician came and without giving an estimate starting to look for the leak. After about an hour the leak was found, however, he could not fix it. I was billed $500.00, which they said was the rate they charge. I initially accepted and paid the bill. However, after I thought about later, I thought it was too very high. After a phone call to the company to express my concern, they lowed it to $400.00. I still thought it was to high for about and hours work. I would not hire this company again. Although, their technician was very good, their charges are out of line.