Best way to do that monkey?
Do you have a p/x to get shot of? Easier if not. If it's the Megane i'd sell privately - you won't get the best money for a Renault from a VW garage.
Selling privately you can chase the brokers to order you one - usually drivethedeal is cheapest for VWs, sometimes it's Orangewheels. If not, take down the broker price for your car and any options down to your local VW dealer and see how close they'll get to that price - you'll get the "my kids won't get any Christmas presents this year" look, but it's achievable if they've got a decent customer satisfaction rating and large volume bonuses going on (as most of the bigger groups have). If you get short shrift then try another dealership group.