If you return the car at the end of the day and rent another car for another week, you have just paid for that day twice. you paid at the end of the first agreement then you paid for the other half of the day full price. i have done this 3 times without realizing it. 3 days of double billed. If you go over the agreement date because of runaround methods you will pay about twice as much as lets say price line for each day. Read your agreement don't take their word for it. Tanks on newer cars are smaller and would take gas price to be about 6/gallon to make 50.00 to fill if empty. So, if gas is 4,00 it would take 40.00 to fill if empty. If you rent the car at 300 pm and a week later return it at 400 pm, you have just been charged another day for the 1 hour after 3pm. Done that a couple times too. So yes not happy with like 5 days of being billed in a month and half.
Recommendation: Read this
The complaint has been investigated and resolved to the customer's satisfaction.