Honda Cars India Ltd. — leakage in the car

Respected sir/maam,
My name is punit mehta. I own a honda city 2014 registered with mh02dn9919 in mumbai city. From last year my car is leaking with water. Whenever there is rainfall water gets collected near the leg room of rear seats and in the trunk of the car where stepny is there. I had complained about it at the service station of solitaire honda mumbai but they are failing me to solve this problem. They had carried out some work in the car by applying some sealent and i had paid for the same and it can be varified from my service history. Kindly let me know weather it is a manufacturing defect or what. Due to this life of my car is reducing and it might start rusting also. Please kindly help me to solve it. My contact number:[[protected]]. Hope you take action soon.