Since the weather was nice i decided to give the car a wash this afternoon. All going well until i started drying it and i found some rust spots coming through under the rear window

Pictures arent great i'm afraid as the camera didnt know where to focus, kept going for the reflection onf my neighbours car.
This is on the drivers side


This is on the passenger side,

As you can imagine i'm not a happy bunny. I've not been in touch with the dealer yet but i'm not going to settle for having it rubbed down and re-painted, not on a brand new car, ill be asking for a new tailgate. Still doesnt feel right though, fair enough if i crashed the car or damaged it in some way but why should i have to have bits of the car replaced and repainted due to what is clearly a manufacturing defect? ie they cant say it's been caused by a stone chip, not in there. It doesnt show very well in the pictures but the paint looks very thin in there.
Kenny