Left luggage in Ola cab - now he is giving death threats when i call him

I booked an Pla cab BR01PR1509 ( Driver - Chandan Kumar ) .It was habing a CNG engine so i had to spread luggage and keep. While deboarding some luggage got left .i called him withing 10 mins , but he is saying he csnt return. Then i told him to retun the luggage whenever he can at Kankarbagh but he is not ready for that also.He started shouting and giving death threats.i complained to Ola but they are saying just file a FIR.