Lost Tablet and work shopper bag.

On Sunday the 11th of August, I took an Uber in Durban from Pnp Hyper by the Sea to Isipingo Hills driven by Kwanele who drives a Toyota Rumion plate number is BH 39 DP ZN. I forgot my shopper bag in the car, inside it had my work tablet and work merchandise. I’ve finally managed to get ahold of the driver but now he’s refusing to give the things back. Can I kindly get help