Axis Bank — Regarding Credit card dues (CaseId :[protected]

I am writing this email to seek help in payment of my brother's credit card due which he is unable to pay at this time.
I got a call from someone in the Axis bank credit card department (i am guessing he was a collection agent). He asked for one installment promising for a settlement after that. Now he is not responding at all. And i really need help in this matter. Please call me at :- [protected]
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Below is the agent ph number: [protected] Name:- Tyagi

Thanks and Regards,
Aditya Dayal
Mob- [protected]