'we know we sold you 50 gallons of gas, but you are only allowed to use 40 gallons.'
Nobody ever uses more than 40 gallons though. So if you do, you're abusing the system.
So making someone pay for 10 gallons of gas they're not allowed to use is fine with you?
Nobody ever uses more than 40 gallons though. So if you do, you're abusing the system.
So making someone pay for 10 gallons of gas they're not allowed to use is fine with you?