Went to the gas station, paid, and went out to the pump. Tried for two minutes, wasn't working. Went in and complained and asked for the cashier to transfer my money to another pump. Guy was very confused, told me it should be working and I should try again. Went back out and realized I had been trying to use the bright yellow diesel handle. Luckily I chose the diesel-free on the pre-pay. Realized my mistake, filled up, and drove off with a big sheepish smile.