Ola Cabs / Ani Technologies — booking disappeared from the system

I have encountered this issue now twice. I booked a cab from kothrud to sinhagad road pune a few days back. I got booking confirmation in the system.

On the day of the travel, i could see the booking in my ola app.
However about 15 minutes before the scheduled trip, the booking simply vanished from the app.
As a result no cab was assigned and there was no otp. I had to then take a 'ride now' option that fortunately worked.

This has happened now second time that a few minutes before the scheduled trip, the booking simply disappeared from the ola app.
Their data base has some serious design flaw.
It's hard to prove it and i don't think there's any customer care number or any contact or any senior official in ola listed anywhere to contact them.