Amazon — product not worked properly

Address:

500018

As i mentioned that, i have purchased "lifa multi electric mini 4 in 1 desktop functional household sewing machine for home" through amazon on 25th march 2019, my order #[protected], that not working condition properly from last two month. I am trying to amazon to conduct but i did not get. Even from past 3 days i asked amazon they telling to contact seller. If i sent mail to seller he is telling to contact amazon.

Who is the proper responsible.? I have warranty for this.

I really want exchange or refund for this.
My name: mohan kumar m
My main id is [protected]@gmail.com
My contact no [protected]