Amazon India — amazon account being closed for using brother's visa card

Website:

www.amazon.in

Complaint summary:
Closed my account because i used my cousin credit card.
My cousin doesn't have any objection, nor the banks has any objection.
There was a legitimate reason to do that purchase through his card as he didn't have an amazon account and we needed to purchase the laptop on urgent.
Still the account was closed and my 8000 rupees of amazon pay money is not payed back.
Above all they dont even have a courtesy to respond to emails and complaint send to them. Even my brother dropped an email and they don't acknowledge it.

Details:
On 29th april 2018, i purchased a laptop for brother using his visa card details
There were two transaction performed by me, the first one failed but the second one was successful.

But due to payment failure, my account was locked for 2 weeks.

The account specialist team requested for documents that showcase the card holders name and card details, accordingly i shared all the requested document to convey that it isn't any fraud but a legitimate transaction

To maintain the priority of my request, i ensured that frequent followup emails and calls are done. They used to send a mechanical email which provided timeline of 24hrs. But never really replied and address the issue within the committed time.

Later after 7 to 8 days the documents of review of my documents, the account specialist informed that my account is closed and i wouldn't be able to create any amazon account in future.

My thoughts:
It seems there is a fraud or scam, amazon locking and closing down accounts. And especially user with amazon pay money in their account.
There is even a hashtag in twitter #amazonclosed.
Also found another complaint in this site of the same kind.
Not sure why is amazon doing this?
Is account specialist team that final authorized persons for amazon?
Isnt there any other parallel channels that can challenge any decisions made by specialist team?

Amazon id: [protected]@gmail.com