Amazon India — Amazon close my account and I am not able to use gift card balance

Address:	411033
Website:	amazon.in

I have amazon.in account with [protected]@gmail.com.
I purchased a gift card from amazon Of Rs.2000. Then I ordered Mi max mobile of Rs. 15000, order was successfully placed. But immediately I received mail that your account is close and you will get the refund. I had receive gift card refund of Rs. 2000 in my amazon account. And Rs.13000 in my bank account.
But now I am unable to access my account, and i have Rs. 2000 balance in my amazon account.
I already contacted many times to amazon customer service. I had receive email from account specialist, and they just said your account is close by amazon. They are not saying anything about my gift card balance.
I want my gift card balance refund into my bank account. If not possible please unblock my account for sometime so that I can place order with gift card balance.