Amazon India — Oneplus x defective phone sent online purchase from amazon

Address:

Bangalore, Karnataka, 560 079

I purchased on 10.12.15 and failed to return the mobile within the return period offered by the company as the phone started giving display problems. During second week of January 2016 the phone entirely stopped functioning.One plus support tried online and informed me to contact their service centre. I approached one plus service centre at Chennai and they informed that the warranty is not applicable as the iem no and serial no of the mobile is not mentioned in the invoice. I approached Amazon last week for issuance of invoice with IEM no and serial no. They are not issuing fresh invoice. Now I want to return the mobile to Amazon for sending defective phone and issuing Invoice without Sl No. and IEM no and proper warranty card.