not disclosing their terms and conditions

on the 8th of October my insurance hired a courtesy car from Europa car. i was told that a car will be delivered to be around 5 PM . but i kept on getting delays up until 8:30 PM. we had to use a phone to inspect the car and i pointed out that the wheel cap was loose and skewed.it was acknowledged. the following day on my way to Zerust that thing fell off and i called the guy that delivered the car and informed him. he didn't mend ion that i will have to pay for it nor did he disclose that i have to return the car on full tank because if he did am sure i would have cost me more than R500 to refill that tank. and i was aware that i must return the car on Sunday. i called their office to make arrangement to return it on Monday i'd pay for extra day, i was told that since they don't open on Sunday i can return it on Monday it should be fine. hello!!! now am being charged for Monday again. Worst thing is that they just debiting my account they without informing upfront