Amazon India — defective mobile (battery become hot & discharging fast) not picking & refunding

Address:

Pune, Maharashtra, 411027

Dear sir,

Name :- rahul dhere.
Order number :- order #[protected]
Product description:- redmi note 4 dual sim android smartphone with 13 mp camera, gold (4gb, 64gb).
I purchased new mobile through amazon on line model name
"redmi note 4 dual sim android smartphone with 13 mp camera, gold (4gb, 64gb)" by seller maruthi traders.
I receive it on 02-feb-18 in time but from first day i relisted that mobile become very hot at the time charging and fast discharging. It is risk for me to use this type of mobile.
I need to return & refund the amount.
I requested on line to return & refund it.
My pickup tracking id is[protected].
By dropping 6-7 mails but there is no response from amazon for pickup
They are saying to do app test which is not accepted by me.
My mail id :- [protected]@gmail.com
My contact number :- [protected] or [protected]
I request please look in to this matter.

Regards

Rahul d.