Problem fueling

This has happened to me 4 times now in the 7 years I've owned my car. It happened so infrequently I thought the problem was the pump's sensor was not working properly. However now it's happened twice the last two times I've tried to fill up. On Friday my son was supposed to fill the car and could only get 1 gallon in and the fuel pump kept clicking off as if the car is full of gas. The bars never moved and I thought the problem was the pump. Then today, Sunday 2 days later, I decided to go ahead and fill it up. I have 250 miles to drive and want a full tank of gas. The tank shows 3 bars. I started fueling and it clicked off at 1 gallon... seriously. So I pulled the pump trigger again and tried to force more fuel in and it stopped and wouldn't add anymore than 1.7 gallons.

So now I have a long drive tomorrow and I can't figure out why the pump (a different one than I used on Friday) is clicking off as if the tank is full yet it can't be because I drove 250 miles since my son tried to put gas in on Friday and it's showing I have 3 bars.

Has anyone else had this problem?

I'm thinking maybe there is buildup in the tank??? What could possibly cause this?

 

Thank you! I'll try that tomorrow.