Uber India — product left in uber

On 12th june i took an uber from sewri to goregaon west at around 12noon i by mistake left my puma shoes and puma backpack in d boot, it was a white accent car, i don't remember the car number, tried to call him on the number he had called me from that is [protected] but he is just not answering in fact for one day he had also kept his phone switched off, it seems he has no intentions of returning my stuff, need you'll to intervene and help me get my stuff back as it is not a cheap brand. Kindly revert back on mbitra.[protected]@gmail.com