Uber India — unrealistic cancellation charges

Address:

Mumbai City, Maharashtra, 400050

Why is it that at the time of booking the vehicle it is being shown as "5 minutes away or 7 minutes away" when after booking the uber, it comes back as saying "12 minutes away" or "x minutes away", much longer than the time indicated prior to booking.
And to top it all, you charge a cancellation fee.
This amounts to cheating and no one seems to mind, the 'cancellation fee'