Engine Cooling System problems of the 2007 Chevrolet Aveo

Back in may of 2008 I picked my son up from school, I smelled a smelled like antifreeze. I stopped at the store but I didn't think it was my car. About an hour later, when we went to church, I smelled the same smell, being we were the only car in the parking lot, I knew then it had to be my car. We put water in it and waited until the next morning to take to the dealership we purchased the car from. They said it appeared that I had hit something and the bottom of the radiator was damaged however I kept saying I didn't hit anything and they told me to try to turn it in to my insurance and see it they would cover it. One man even walked me to the car and said if I needed help that "help me out". That afternoon I was on the phone with the insurance company telling them exactly what the dealership said that I had to have hit something but I didn't remember hitting anything would they cover it. In the end the insurance company covered the repair of the radiator plus 5 days of rental car. When we went to have the repair done on the radiator, we asked for the old radiator back. My husband took it back to his shop and did a pressure test on it. The hole was actually in the middle of it not in the bottom and you could see where the fan shroud lined up where the radiator mounts to it and it had rubbed a hole in it causing this whole problem. Even though the insurance covered this, I still thought retribution needed to be made because perhaps this was a lemon car or either a recall needed to be done. This happened at 23,000 miles approximately. Then the following month the same fan shroud rubbed a hole in the air condition line and we were without air about 2,000 miles later and the dealership took responsibility for this and covered this under the warranty. It really didn't make any sense. I have called gmac and they have said the dealership are their eyes and ears and we have given them the old radiator back so they could see what we saw .