Berger Paints — Paint peel, fungus within 3 months of painting

Hi,
I got my house painted last year by berger paints and the service was one of the most unprofessional service I have ever seen in my life. The workers kept spitting ghutka everywhere and the paint finishing was pathetic for such hefty sum. The paint started peeling within 3 months. Also got PU coating done where initially we were told 25 boxes would be needed but only 8 boxes were used. The bill was charged for 25 boxes. There is fungus on the walls. Got my house painted so many times, but have never faced such issues. Raising customer complaint has become bigger headache where I have been chasing them for 3 months and everytime a new person visitsour house and gives different excuses. The justification are not even consistent among the berger paint executives who visited our house. The moisuture content was 6 and was measured in front of everyoneand paint is peeling. However reason given to us by executive was moisture content is 12 and nothing can be done in the email. Expecting a strict action and resolution. The whole amount which is not a small amount is a waste and have incurred losses.