Flipkart — Damaged washing machine received

Address: Durgapur, West Bengal

After my order I received a washing machine which was an open box delivery order, the parcel was delivered in the afternoon, upon proper and thorough inspection I found that some dents are visible in the bottom edge portion of it.
As soon as I observed I contacted flipkart with all the proofs and contacted them several times but they are denying & I even stopped the installation. Kindly guide me with proper planning so that I can get my hard earned money back