Zoomcar — Fuel refund worth 4000INR not done - despite contacting multiple times

This is about my booking please find below the scenario

Booking was made for i20 diesel at 10:30 pm, post few mins the car stopped and blacked out this was at a petrol pump wherein I pumped fuel for 4000 INR, they provided me another car but the fuel from the previous car was not received

It was already told to zoom car back end Team

Now despite multiple emails, calls they stopped responding

Please help