Air India Express — no refund after a month of cancellation

With reference to confirmation# rsoafo. This was cancelled on 24th of july and i still have received my refund. I used my credit card to make this purchase and it would be great if i could get the refund at the earliest. I am here with attaching the itinerary for your reference. I have not received any email communication form airindia express either.

I have called your customer service department everyday for the past 15 days and have emailed below address 11 times but no one replies.,
[protected]@airindiaexpress.in,
M. [protected]@airindia.in,
Ramakrishna. [protected]@airindiaexpress.in,
[protected]@airindiaexpress.in,
[protected]@airindiaexpress.in

Request you to please look into this and contact me on my indian number +[protected].

Looking forward to hearing from you