Zoomcar — I have already Paid to car Owner but still I am getting 1075 as outstanding amount

Booking id: JPSN7BS99
Concern in detail:
Car owner called me during my Trip and informed not to fill the fuel tank as he has to service his car. While dropping the car, Car owner came and checked the fuel with his estimate, he requested for 500 cash for fuel.
Car owner Stenil informed that he will not service his car for now as he got another booking.
We dropped our conversation and I started taking pics to complete my trip. He said leave it i will mark all ok from my side and you also do the same. I left there and took cab for my location.
Later Car owner send me message in Whatsapp asking for 500 more. As he was nicely taking to me, I paid him. So in total i have paid 1000 rupees via UPI.

Now when i reach back my home, i see zoom car has charged me 1075 as outstanding amount.
I informed Car owner and he said he will look into this.
Called customer care and she conferenced the call with car owner which he denied stating that “i dont remember”.
Now today legal team pinged me in whatsapp and threatening me that they will take action against me if I dont pay the outstanding amount.
I shared the same information over whatsapp but they no response. I tried calling them but noone picked up.

I have the whatsapp conversation as well as UPI payment record with me and this to sort.

However, I have paid the amount but i want this to sort so that Zoom car people also get to know that car owners can play with users like this and this needs to be actioned.

NOTE: Car Owner was there when i picked the car and we had normal conversation about my plans and all. He himself said after your trip i will drop my car for service.
He was in constant touch me during my trip and use to call and text me if everything is going good. On top of that he came to meet me when i dropped the car.