Has anyone been successful in challenging Renault re the window regulator?

I have experienced this problem so many others appear to have had too. I have a 2007 megane dynamique, which I have had from new. last week my driver window deadlocked in the open position and the passenger window deadlocked in the closed position. Cost me £100 for a garage to secure the open window and told replacement motors likely need to be replaced.This fault appears to common amongst so many owners and I wonder if anyone has been successful in challenging Renault to sort the problem or progress any recall actions. I have been told wil cost £278 per window to fix ??