I rented a car from Alamo at San Francisco Airport. It was a Dodge that had run 14,000 miles. On September 15th, the agent, who spoke broken Chinese, told me that if I paid an extra fee of a little over $3, I wouldn't need to fill the tank when returning the car. I believed him and signed. As a result, I was charged $51 when I returned the car on the 30th. Since it was just after 8 in the morning and the agents were probably not on duty yet, I didn't argue because I was in a hurry to catch my flight. Ten days after returning home, another $22.4 was deducted without any notification or reason. Always make sure to return the car with a full tank.