I only got 10 litre of gas after two hours of waiting

No gas! Somebody please help….I cannot believe that what I got after two hours of waiting in line was only 10 litre (2.64 gallon). I need to drive a car for work, so it is a nightmare. People who do not necessarily drive, please refrain from filling the gas tank. If it is empty, I understand. But why do people need to come and fill up when still gas is left enough? Don’t waste! Be frugal!