It seems that many have viewed the video on You Tube of the fine ‘workmanship’ and have been interested in an update to what happened as regarding the Cowboy installation of the new windows and door where I live. Well indeed they did come back to put things right, to a degree.
You can see the updated video here.
You can see below the results of their attempt to put things right. Since this was filmed, have seen that outside they seem to have used some kind of bathroom sealant, which in the cold weather has shrunk then gone brittle and all but fallen away. See photos for the results. They are due to come back yet again and wonder will it ever be put right?