Radiator Hose problems of the 2003 Mitsubishi Diamante

First the windshield on the Mitsubishi Diamante 2003 LS fogged up, later fumes started to come out of the vents. Also, noticed damp carpet on front passenger side. Close inspection indicated coolent was leaking on the carpet. I took the car to local dealership for repairs. Service technician at the dealership diagosed the problem with heater core and the hose connecting to the heating system faulty. Coolent fumes are toxic and can cause severe injury. I am hoping that NHTSA will take action and mitsubhi will reimburse me and others for the charges to replace faulty equipment.