Nokia India — Improper service at Nokia care

I had purchased Lumia 720 in Nov 2013. Since then I came across at hanging problems for atleast 7-8 times. Every time I was asked to wait for a longer time to start my mobile phone. Recently by an accident, my mobile fell down thereby breaking the touch screen. Display was absolutely fine. I could perform all the functions as before. Just to replace the touch screen, when I visited Nokia Care at YAVATMAL (Maharashtra), I was told to replace the display which was costing around Rs. 7500/- excluding service charges. I was shocked to here. The mobile which I purchased was costing around Rs. 15000/- now it is hardly at the cost of Rs. 8000/- to Rs. 9000/-. Is it worth to replace the entire display when only touch screen was broken?. When I asked the service person, I was told that no touch screen is available for Lumia 720. If it is true, this is completely cheating with customers.