Tank Assembly problems of the 2008 Mazda MAZDA3

I own a 2008 Mazda3 that my daughter was driving when the car started lurching & bucking as she applied pressure on the gas pedal. It finally quit running & she had to leave it on the side of the road. When I arrived I found that the car did the same to me. I called a tow truck & had it towed to the dealership where the car was purchased, thinking it would be a warranty issue. When I was contacted by the dealership I was told that it was not covered under warranty because the car had been over filled with gas, which allowed gas to flow into the purge solenoid & the charcoal canister. I didn't even know this was possible! the dealer told me that these being full of gas was the reason the car would not run properly. I questioned them that this was a design flaw by Mazda & should be addressed! they told me that Mazda would do nothing for me because it was my fault that the tank was over filled with gas. To me if you have gas flowing into components of the car witch aren't intended in holding gas, there is a design problem with the car not to mention a safety hazard if the car is ever in a collision! I fear for the safety of my daughter & do not want her trapped inside of a burning car if these components keep filling up with gas & she is involved in a collision. I called Mazda customer service & they also told me there was nothing they would do for me because the car was overfilled with gas. I was told that this will keep happening as long as I over fill the tank & to not make a complete fill up to keep this from happening. I had to pay for the repairs & I do have the parts that were removed. I hope someone, with you, can help me solve this problem before someone is seriously injured in a collision & a fire erupts from gas being able to flow into places it shouldn't be. Thanks for your help.