Ball Joint problems of the 2018 Mazda CX-5

1550 miles on my Mazda cx 5. After picking my car up from marin Mazda from supposedly being repaired I am driving home when the same resistance problem I took it in for happens again. Feels like I am towing a very large tractor all the way home. I look under the car when I get there and notice that the ball joints, tie rod ends, some of my brake parts and many other parts are rusted. This is very concerning to me because marin Mazda told me they took my brakes apart, cleaned them because there was a piece of dirt in there. Dirt should not be able to get in the brakes. Also this means that they saw the rusted parts on the brakes and suspension and said nothing to me, did nothing to fix them and sent me on my way telling me this car is safe to drive. I started doing some research on Mazda's vehicles and found out that they have previously had to recall hundreds of thousands of their vehicles due to them being unsafe to drive due to rusted suspension and other rust issues. Marin Mazda knowing set me away with rusted suspension parts, brake parts and told me this car is safe to drive. Ignoring my complaints about how the car is not operating right. After seeing the rust and taking my car back to the dealer marin Mazda, one more time and them repairing nothing, I contacted Mazda north american operations. Informing them of the issues that I have been having my car was also damaged while it was at marin Mazda for repairs this last time. There was still white grit from their stucco wall,from where only their service techs can drive the cars, embedded in my bumper/ paint. Mazda corporate has done nothing about my car not being repaired even thou my complaints were duplicated by the service tech nor about the damage to my car that was proven to have happened at their shop and confirmed by the service manager. I told Mazda corps representative dave about the rust as well.