I got mine done last year with no hassles, you may as well just go straight to your dealers bodyshop because if you phone them they will just ask you to bring the car in for a look anyway. They will take photos and check your pant depth then send that off to HQ for an answer. You might get new wings out of it or just resprayed depending on how bad the corrosion is. Good luck and don't be fobbed off with excuses if they try it on.