Bolt driver stole my phone

31/01/2020 requested ride to rosebank mall it was 5pm within 10mins realised that I forgot my phone then I called Aubrey the driver to bring it back he said he was going to Rooderkop if I'm not mistaken but he will bring back I waited 4 hours then he started rejecting my calls he even switched off my phone . Left the mall at 9pm called him when I got home around 11pm using a different number he answered and then I asked him nicely to bring my phone back on Monday the 2nd of February I called him yesterday he said he will bring around and he never did then he started ignoring my calls and switched off till today.. Now had to buy a new phone and do Sim swap that fone has personal thing my banking app. I want my phone back