Spice Jet Airlines — mishandling baggage

My rucksack given as check-in luggage came in torn when i reached delhi from mumbai via spicejet flight sg6704 on 4th nov' 19. My bag also had a fragile tag. To be clear the fragile item is safe. The waist strap (The whole purpose of the bag to carry more weight with ease) was torn and no responsibility is being taken by spicejet. They say there policy is as such. They cannot take this lightly. Everytime anyone gets a damaged bag (Which happens very often) there policy is protecting them!? We cannot bare the cost for there mistakes!
I spoke to them with no avail hence i'm here. Hopeful for some fast track resolution.