Ola Cabs / Ani Technologies — searching and booking

Yesterday i. E., 11-oct-2017 i tried booking auto, it first searched for availability said "sorry try again", i again tried it agin said "sorry try again". So, i locked my phone screen and kept the phone in my bag then moved on.
After a while when i checked my phone i saw ola notification and an incoming call (Missed by the time i picked up). Notification displayed some driver details.
How can this even happen?? When it said try again i locked my phone screen then when did the booking happen??? That poor auto driver was waiting in the pickup point for 15mins. This is ridiculous.
Make sure that the booking status is proper.
Hope you'll rectify this.