Toyota Corolla: Fire

For three weeks after I took my Toyota Corolla in for its first 1000 km service I was feeling quite ill, my speech was slurred; I was tired and sleepy all day, nauseous and had severe headaches. Then, two weeks ago the car caught fire when my husband was driving. There was smoke everywhere. My husband looked under the bonnet to find the cap had been left off when they checked the oil. There was burning oil everywhere, all over the engine. When I called the service centre, they played it down. They told me to take the car to them, which I refused, so they sent a mechanic to take it away. They brought it back a couple of hours later and said it was ok; they cleaned the engine and replaced the plastic cover. I would like to know if this has caused long-term damage to my new car. I also went to the doctor and he took blood tests and said I have lung damage and that I was very lucky to be alive, as I have been inhaling carbon monoxide.