Taxify(bolt) driver left with my phone

On Saturday we requested Taxify(bolt) from 7 7th street Johannesburg to 109 Albert Drive Northcliff and a driver by the name of Samuel picked us up, I charged my phone in the car, after he dropped us off i realized that i forgot my phone (P8 Lite). We tried to call the driver but his phone was and my phone was off. We sent an email to Taxify(bolt) but no one has responded and Samuel's phone is still off.