Apple India — conquer, bhimavaram report my iphone 8 plus 256gb is duplicate, so it will not cover under warranty

Address: Yamaha service, undi road, Bhimavaram, West Godavari, Andhra Pradesh, 534201

This is so bad to inform you, that i purchage an apple iphone 8 plus 256gb device from reliance digital, bhimavaram store on 09/06/2018. There is a network (No service) issue with that device, so i went to conquer (Apple authorised service center) bhimavaram on 27th march 2019 and handover my device. On 28th march 2019 at 10:30 am i received a phone call from conquer service and told that my device is duplicate and will not cover under warranty, while directly intrect with service persons, they told that device is duplicate and report me like that.

So kindly resolve my issue and help to keep my trust on apple
Yours sincerely

M. R. Sekhar