UKPassats

I have mentionned this to my local VW dealer where the car is being serviced but they haven't come back reagrding the slow deterioration of the soft plastic paint surrounding the windows switches on the doors. It only seems to be happening at the font at the moment.

Anyone else has / had this and succesfully had warranty accepted? I will definitely push anyway. Warranty expires 31/3/19. Car is a 16reg.

Thanks