Myntra.com — Myntra Not Letting Me Use Gift Card Balance

I have purchased Myntra Gift Card from directly Myntra worth Rs 3499 on Sept. 17th 2021 and when i placed an order worth Rs 448 only through that gift card, Myntra automatically added whole 3499 balance to my Myntra account and on September 28th 2021, Myntra deactivated my same account with Rs 3216 balance without any sms or email, Now Myntra isn't letting me use that gift card balance and even not refunding my money to bank account. Either Myntra should activate my account or my gift card balance should be refunded to my gift card or bank account.