Super gutter
 

Looking for recommendations for a company to replace a supper gutter that goes between the main roof and a addition. The roof was replaced 3 years ago and now the gutter is leaking. Had the company that replaced the roof out 3 times with no success.

Replacing this may not be a simple project. For example, this is actually a support member for our birdcage. I would suggest a careful inspection of the gutter, possibly at night with a light in the gutter to see any holes or cracks. Possibly using a hose and observing where the water appears. I would also look very carefully how the roof drip edge is installed as the "leak" may be water coming off the roof and missing the gutter. I have seen leaks appear several feet from where the problem was actually located.
Hope this helps.
As for an installer, if this is associated with a birdcage, I would state calling birdcage installers and see if they are willing to do the replacement.