Havells India — Gas geyser not working properly

Hi,
We have purchased a gas geyser on 20/3/2021 and it is creating a lot of issues. We are facing a lot of problem on daily bases. We have connect and asked for the service they send the technician and that technician does not satisfy us with the service. This geyser is not working properly and every second day it stops working. Please help us with the issue. This is highly unacceptable as nobody is here to listen to us.
As the warranty will expire after 2 days.

Thanks