[Resolved]  Flipkart — vivo z1x return and refund

I've purchased vivo z1x phone, which has very low battery back up an heating issue.
Flipkart is denyed my replacement even after a technician visit, the technician has checked the phone for few minutes and told he will update his findings, where as in long run phone is discharging fastly and heating quickly. Then my retun request is rejected without any reason.
I've again requested the return request for the phone.
Kindly help me to get the phone return.