Air India — Non-processing of refund

We have been following up for our refund of cancellation done in Nov 2020. I have sent many mails on customer care email id as well but no response. At last, we called customer care and they told us that our refund is processed few weeks back but we have not received it back in our card. We requested them to give us any screen shot or details to verify the same from our bank which they denied. Can you please help.

Reference no given by customer care department on call for our cancellation are as below :

Isha : 098CS14391G9H
Viaan : 098CS14391G6X

Booking reference : Y572H

Contact details : sachdeva.[protected]@gmail.com
Contact no : +[protected]Bahrain)