Paint problems of the 2010 Toyota RAV4

I purchased new from Toyota of warrenton, va in 2010. My car developed a paint peeling problem last winter. I have been told by an auto paint company that it is due to manufacturer malfunction. I have attempted to contact Toyota of north America; I filed a complaint, met with my local dealer and discovered that corporate gives the dealer the power to delete the claim, preventing me from dealing directly with the manufacturer. In effect, I have no recourse.

Paint on roof is chipping off. I have seen numerous complaints regarding this problem on both this and other websites, especially related to white vehicles. Is anything going to be done about this?.

The paint on the roof is coming off. I researched it online, and other white Rav4 owners have the exact issue. I just communicated with a local toyata dealer and Toyota says it would cover 80% of the repair cost (part only, not tax). I don't think this is right. If this is the paint defect, why would I have to pay for this repair?.

The part between the roof and front wind shield is corroded so bad. Everybody asked what happened. I took the car to the dealership in savannah, GA. , charleston and lugoff, SC. , neither one of the dealerships cared. They passed it off as nothing. However, it is a problem with the paint. The paint is peeling all over the car. I will upload a picture of the main part that peeling.