Lost cellphone - Didi driver not responding at all

I have lost my cellphone in the the driver's car. I immediately contacted him the phone rang but and someone answered but didn't talk. I have messaged him in app 6 times and called 3 times with no help. Your 72 hour policy for lost goods is absolutely ridiculous its like giving ******* time to *****, also the app is ********** when reporting lost items because you are left at the mercy of a driver rather than a support center to assist. You guys are so called ubers rivals, please this will never happen with Uber! I need a response