Honda — Defective car delivered to the customer and not getting satisfactory response from the honda customer care and the delaer

I had purchased Honda city - 5th gen on December 10, 2020, not knowing it was the biggest mistake to trust Honda, on 27th March, 2021 it failed to start in the middle of the road. Crane service from Honda came to pick it up on 28th March, 2021.
Since 28th March, car is in the workshop and they identified some manufacturing defect which they apparently failed to identify at the time of delivery of the car (or it is a scam from Honda / dealer side to deliver the defective car).
Today is 15th April, 2021, yet they say they "might" take 10 days more, even more.
When asked to provide the spare car, they deny it to the customer.
There are no follow ups from the dealer or the honda on the status of the car.
Who will bear the business loss I have faced due to non availability of the car?
I need my money back from Honda, I do not want that car anymore.
I need my entire money back.
Honda has to be boycotted.