Windshield Wiper/washer problems of the 2006 Jeep Commander

When at or below freezing the windshield wipers will not make contact w/the windshield in certain areas. Medved Chrysler /Jeep replaced the windshield wiper blades, which already was replaced with 3 different types prior to them, it did not change. They then replaced the r/f wiper arm, with no change. I asked if the windshield could be the problem, Chrysler would not replace the windshield. Elite replaced the windshield @ no charge to medved or me. It became even worse!!!! I have seen other Commanders driving towards me w/the same problems in the same area of the windshield. The zone rep for Chrysler even stated "mine does the same thing. " the obstruction of view directly in front of the driver and passenger is dangerous!! Chrysler "can't see any physical defect" so it is not a problem. The service manager for the castle rock branch of medved was able to see it all happen firsthand. He called chyrsler,and they blew him off as w/the the first time he called them w/ my complaint. I have called Chrysler's 1-800 number and they were less than helpfull, said "it is up to the dealer you took it to to make a decision. They have done all they can; this is a engeniring or windshield manufacturer defect that is dangerous! this vehicle cannot be driven @ or below freezing w/out the windshield wipers loosing total contact in a circle pattern directly in the drivers and passengers direct line of vision in front of the vehicle, only changed by pulling over and blasting the windshield w/full heat and full defrost with the wipers on medium/high until the circles are gone. Once driven again the circles start small and become larger the more you drive it even w/full heat and defrost!! the defroster air flow seems good in the center of the windshiedl but lower as it goes out to either side.