Amazon India — oneplus 3t

I had purchased oneplus 3t gunmatel from amazon. I had given order on 28th april 2017 and product was delivered on 2nd may 2017 after three months i,. E is 2nd august i hve complaint on amazon and was given false address of service center. I had purchased this of rs 29999. And now they are repling to go to service center. I want new piece. Not satisfied by answer given. This means we keep on following them after purchasing a big amount mobile phone, i had called on amazon talked with mrs pooja.