Day light *******

I needed a car for 2 days but was advised to rent it for 3 days to avoid me paying for extra miles used out of the 2 days kilometers allocated for two days. I brought back the car within two days but now I was charge the for the kilometers allocated for the 3rd day. I was even charged for petrol, no one inspected the vehicle with me on the day of pick up which showed +-550 mileage on the petrol as per the dash meter. I brought it back with over 600 worth of petrol as per the kilometers.