Zoomcar — Did not receive the car on time

I did a booking for a zoom car for 19th March 2022. First they changed my selected car three times .then on the day of booking, did not receive any update from the driver or zoom car. I called them twice and everytime they will put on hold for 15 mins and will say that someone will call .But no one called. During booking they assure that i will get the car on time. But did not get the car. I have already paid the amount. They have policies to impose additional charge of customer is late in returning but what if they only deliver the car. Pathetic service and worst customer service.