Lenovo — Warranty issue & service centre

Address:

Thane, Maharashtra, 421103

I had buy a7000 model of lenovo from flipkart on 22/04/2015.
Recently on 04/04/2016 on my mobile, there is yellow patch, i visited their kalyan gallery on 06/04/2016, they checked my mobile and said it will not cover under warranty. I called their customer care, personnel say service station owner will mail the pic of cellphone then we will decide whether its covered under warranty or not.
So again i visited gallery on 12/04/2016 in evening, owner of gallery told me that he mailed the pic. I come to knew after calling that to customer care no email recd. Again i visited on 13/04/2016, then owner of gallery said you have to submit the phone and come after one month but my question is when they checked my mobile on 06/04/2016, why i would submit again with them and only thing is they have to mail the pic but they are not, pls resolve my query, as i want to take strict action against the service provider & lenovo official