Can't fill gas tank?

I realize that this this question has been asked already, but I didn't understand any of the responses so I'll try writing my own question. The gas pump 'pops' as if my car is full repeatedly. I can only have about .50 worth of gas pumped at one time. It takes half an hour to fill the tank. ... show more I realize that this this question has been asked already, but I didn't understand any of the responses so I'll try writing my own question.

The gas pump 'pops' as if my car is full repeatedly. I can only have about .50 worth of gas pumped at one time. It takes half an hour to fill the tank. This wasn't too big of a problem when it started in the spring, but now that it's getting colder the gas station guys refuse to stand there and keep resetting the pump, so no gas for me :-(

I stood next to the pump/car the other day and noticed that it makes what I do not believe to be a normal sound when gas is pumping in... a loud, cavernous, echoey sound.

The car is a 2005 Ford Escape with 50k miles. This started happening about 10 - 15k miles ago, minimally at first and got progressively worse.
Update: I live in a state where we - by law - are not allowed to pump our own gas. The attendants get very upset when I try to jump out of the car and do it myself - so as far as wriggling around with the nozzle is concerned, it isn't an option. I'll need to fix the fundamental problem.
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