The cheapest way is to go to a used car parts, buy a same 前面的保险杠 for your car. Ask they replace it there or bring it to a garage to fix it.
Do you have an Ottawa Yellow page at hand? Find Automobile Wrecking & Recycling, you'll find numbers of these stores.
I know one, name of 'UNION', at 5402 Richmond Rd (near Fallowfield Rd), Tel 1800-2633595 -- there has a lots of car parts, you could find one is yours! You can call them first.
Actually, I did fix one of my car's 前面的保险杠 by myself years ago. You can do it too but it is a little hard work.
Good luck!