Tanishq — Refund not released - over months now

I have open an account in Tanishq (Orion Mall, Panvel). I wasn’t interested as I was moving out of station but executive there confirmed me that I can take products from any branch of Tanishq.
I have made all payments on time. Last month when I visited Boring Road, Patna branch; executive informed me that amount has been transferred to Head branch. He took my bank account details and other documents (Aadhar and PAN). I’m out of India now and continuously chasing for my amount. There is no proper revert from customer service and executive from boring road branch who had initiated my refund process. It’s over a month now.