Bolt driver drove away with my phone

I booked a bolt from protea estate in midrand noordwyk country view. I forgot my phone in the vehicle and tried to call my phone. it rang for an hour and no answer and then when I tried to call it, it went to voicemail. all driver details are on my phone. the security at my complex gave me the reg no and I also tried to call the driver with no avail. Bolt please be aware who you hire.