2008 Chrysler Aspen fuel system problems

I was refilling the gas tank at a gas station. Immediately after the gas hose "clicked off" (when the tank was full), a very large amount of gas gushed out of the fuel filler neck past the hose nozzle, back-flowing from the fuel tank. I was standing in front of the fuel filler opening, holding the hose nozzle handle, and was splashed with gas. In my estimation the amount of gasoline spilled directly on me was at least one-half of a gallon.

When I put fuel in my vehicle it stalls within 5 minutes. It does it once and then doesn't do it again until I fill up the next time. If I fill it before it gets below a half tank it doesn't seem to do it. The problem is I don't always remember to do that and I am worried that the next time it stalls I will be in the middle of an intersection. I have seen where other chryslers with v8 hemi engines are covered under warranty but chrysler told me that my vehicle is not.