Zoomcar — Unable to cancel the trip

Address:

150, HAL Airport Road, Kodihalli, Diamond District, Bangalore

I've booked a car from Bengaluru airport, I reached to airport and till then in the app the car was booked but as soon as I called the executive he said the booking is cancelled and contact customer care, I contacted customer care and there response was not satisfactory, they are not picking up the phone. Also I'm not able to cancel that trip. Please provide my money back.