Uber India — left my mobile in your uber car to day

To day I booked a uber service at around 11:15 am for a pick up at Ameerpet at 11:30 to Rajiv Gandhi International airport, Hyderabad. The driver, Thirupathaiah with 4 months experience has an identification in the car of a DELL company entry sticker.
The car number maybe TS31T4825 ( I am not very sure about the number)

He dropped me at the airport at 12:32PM

I have forgotten my mobile phone in the car. I had put it on top of the dashboard. I realized this 5 minutes after I got out of the car and tried calling my phone from another phone and it said that my phone was not reachable.
Now it says that this number is switched off.
I could not locate the driver when we went to the free car parking zone. Please help me retrieve my mobile phone.