Billed for Service Not Delivered

Im rather disappointed at Uber . Im new on their app, a first time user, so i booked a trip with the "where to" and "pick up" address as the same. I immediately cancelled the booking and booked with the correct address. I was shocked to receive a notice that i was billed a cancellation fee for the booking that was immediately cancelled for being obviously incorrect(its rather strange that their booking system allows the booking to go through when the pick up and destination address is the same adress). I checked the link they sent with the cancellation fee notification(which u only made aware of after cancelling anyway), and read that a cancellation fee only applies if you cancel more than 5minutes after the booking. So, why was i being billed the fee for an immediate cancellation. I have records to show the booking was done 17h20 and cancellation 17h23. Terrible billing ethic.