Paytm — iphone 7 plus

Address:

Nehru Nagar ,house no 110, Jabalpur, Madhya Pradesh, 482001

My order no [protected]. I have ordered iphone 7 plus on 2nd of november 2018 from paytm and complain the phone manufacturing error when my phone under replacement policy when my phone was not working properly so i had replacement request for this when under replacement policy but they rejected even my product was under replacement policy. I send various messages and called their customer care but they didn't responded even they didn't receive the call many time. It's been almost 8 month i was continue contacting them but they had paid no attention and now my phone is not working properly. It's show apple logo
Please help i have proof as they rejected under policy.