There’s no such contact number available which I’m aware of but you can contact them via below mentioned options to have your queries resolved –
- Support Email ID : firstname.lastname@example.org
- Twitter – You can tweet them @UberInSupport
- Complaint through App – Open the app associated with the account through which you booked the cab, then go to your trips. Click on the trip regarding which you want to file a complaint and select the appropriate option and provide the details.