Air India — Refund not provided against double payment due to air india server fault

It was on 4th June, 2021 that i made a transaction of Rs.3906 as per Air india customer care agent who gave me a link for payment for rescheduling the ticket. The first transaction made through UPI mode was successful from my bank account but the agent said Air India didn't receive it, and that the amount will return to my bank soon. Hence i made the payment again on her assurance, which was successful. But the first amount didn't reach me yet. Ticket number[protected]. Complaint number registered with Air india[protected]