Just pop into Pick 'n Pay, and get a new one?
Seriously though, with any comparatively new car I'd contact the manufacturer & get a list of approved shops in your area. Saving a couple of 100s now might just come back to haunt you 2 years down the line...
EDIT
I see it's just the bumper? If it's limited to the plastic, you might be able to have it welded rather than replaced, which is what the approved shops would most likely want to do. If you're in Johannesburg I can get the details of a guy who does exactly that for you.