[Resolved]  Amazon India — Refund not provided by them

I have ordered a mobile phone battery from amazon on 28 feb 2020. It came and i have requested to return it, the person who delieverd it to me came to pickup the battery next day. But refund was not provided yet so i called helpline and then they said that i have to send that return at my own their courier partner was not supposed to do so. So i have complained them that i havent called the delievry boy and he cannot come to pickup as his own if some request was not given to him they said they will crosscheck and confirm it to me but now they have blocked my contact number so i cant call them
My order id is[protected]