Should I just attach this to an email to my local VW dealer and see what happens? is that what everyone else has done or did you just call in and ask to speak to someone in charge of bodywork?
I think if you try make a claim by email you're increasing your chances of being knocked back.
You should go into a dealer with the car. Ring in advance for a paint inspection as it can be appointment only and takes up to a few weeks. My local dealer said it'd be about 20 weeks!!
This way they can see the corrosion and you can gauge their opinion better.
If dealer one is less than helpful, try dealer two.
This is what I did and got two new wings, with little dealer history, on a 55 reg.