Tank Filler Pipe And Cap problems of the 2008 Dodge Nitro

Every time I fill up my gas tank on my 2008 Dodge Nitro for the last four months, gas overflows from the tank unless I manually stop the pump before the tank is full. A mechanic looked at it and said that it was either a problem with the filter on the gas line or something wrong with the line itself. This is a serious safety issue as gas runs down the side of my vehicle and also is on the ground at the gas station.

I have a 2008 Dodge Nitro--every time I fill my tank it back splashes out at me --I put paper towels up to stop it from getting on cap and then on my skin to no avail --then I put the soaked towel into the trash at station --thats not good--that could be ignited by someone who empties an ashtray or throws a cigarette into the trash --I make a mess at every station I go to --always a puddle --the car is white and I try to wax it evertime but its ohio and I cant wax it when its 10 outside--the paint is discoloring now and looks yellow--you people need to do something now this isnt just an inconvience its epa and safety issue not to mention my health from contact with gas each time I fill please help me.