Brake Disc Rotor problems of the 2004 Chrysler Pt Cruiser

Almost hit another vehicle/ almost went through a traffic light. I have complained mutliple times about my brake. I have had my car in to the dealer 3 times for the brakes, and every time am told brakes are fine. They did adjust the brakes once but the brakes squeal & grind all the time. Was told it was just the new style brakes/ brake rotor is rusting badly and chipping away around the top but was told this is a normal event due to the elements. Also my dashboard is coming away from my window and this has not been corrected or looked at. My tires never seem to stay inflated and was told this is due to the weather even though I have never had this type of problem with any other vehicle I have owned. My car has power surges and they say they could not find anything wrong that this is normal. Belt noise/ squealing they say this is normal wear. I have owned this car since Nov 2004. I also have nicks in my windshield and they said they filled them, after having another glass company look at my windshield they said they windshield had not being filled with any type of filler, so no it was not repaired.