Gas Station Actidently Charges $1.10 Per Gallon For Gas. What Would You Do?

Last Sunday, at a gas station in Los Angeles there was a glitch in the system. Gas that was supposed to be $4.29 per gallon was calculated as $1.10 per gallon. Everyone that bought fuel could see that they paid about $20 instead of $60 for a tank of gas. What did the customers do? What would you have done in this situation?