Flipkart — Not Replacing the Defective Product (Eureka Forbes)

I purchased Aquaguard sure on 15 th Aug from Flipkart . Next day installation guy came.He installed, took 1400 and left. After 1 hour water started leaking and pouring like shower.Called that guy back. He checked and said that there is a defect in filter so request for return.Not return I requested for replacement.From last 15 days Im spending nearly 2 hours with flipkart and Eureka Forbes.No one is resolving the issue.Flipkart is giving some fake promise and date of 3-4 days.On very day they are resolving the issue without any confirmation.When I call to customer support also there is no proper response.Literally daily im spending 2-3 hrs apart from my office work.Keeping my money with them and giving the fake product is not at all acceptable.Either refund my 10k amount or replace it.Daily my opening the issue and they are simply closing it.