Dominion Roofing

We own a very new home in Oakville and have had 4 leakage problems with our roof. Builder told me that Dominion did the roofing for our house. 3 of these leakages occurred in the first year and a half, and the 4th problem occurred yesterday, in nearly the same spot as a prior leak (along the same wall).
We are absolutely furious that in a brand new home we are having to deal with a leaky roof due to faulty flashing installation. The job that Dominion did on our beautiful house is beyond poor. It's hard to understand why a respected builder like Ballantry Homes would employ Dominion Roofing when we and SEVERAL of our neighbours have experienced the SAME problems since Day 1.
Our front porch was the first to leak, every SINGLE time it rained.
When this was supposedly repaired, the same water made its way into our garage and we have watermarks and leaks in there too.
Third leak was in our breakfast area. Bad installation of flashing seems to be the common cause in all these cases.
Now we have another several leaks to deal with, this time INSIDE our home again. The leak is along the SAME wall that extends into the front porch. So basically, when they repaired the flashing above the front porch, the water that used to accummulate there now runs backward toward the house again and is causing several drips and soggy ceiling patches inside our house.
Dominion Roofing is horrible. Stay away at any cost. There is no excuse for 4 roof leaks in 2 years in a BRAND NEW HOME. I don't care what their excuses are, their workmanship is simply shoddy and they do not deserve your money.