Xiaomi India — Regarding my mobile (Xiaomi mi4i) repairing issue

Address:

Indore, Madhya Pradesh

I had xiaomi mi4i but unfortunately its screen got cracked due to which its touch and display is gone as i bought it nearly one month ago so it is covered in warranty and it is broken nearly 10 - 15 days ago.
It was in my shirt pocket i take it out it slips of from my hand and bang onto a sharp stone and screen got cracked. As my phone is in warranty so they should repair it and free of cost but i visit to service centre of company i also want to complaint about the unethical behaivour at service centre i showed them my phone and they tell me the price of repair was 10, 900 they didn't even hear that how it is broken and is it is in warranty or not, and my phone is of 13, 000. I want that company should repair my phone with free of cost and if they take money for repair then they shoul tell a suitable price but since it is in warranty it shoul be free of cost.