u/MessageEducational64

I bought this water tank which has 10 years of warranty and it started leaking after one year of usage.. I have contacted the customer care multiple times via phone and let them know the issue but didnt not get any satisfactory reply.. After multiple failed conversations they do not attend my calls now and I want to file a compalint on consumer court. What are the procedures to file a complaint on consumer court. What evidences should I include? Help me plz