Air India — Refund Not Yet Received

I have booked a flight using Air India website.

On 1st June received an update from Air India have changed our flight given us a connecting Flight Lucknow - Delhi - Bangalore with a layover of 8 hours in Delhi.

They have given us two options either we can cancel the tickets or choose any other date when a direct flight is available. As per the customer care executive, we will receive the full amount refund within 21 working days.

Booking Date: 28-May-2021
Travel Date: 4-Jun-2021
Lucknow to Bangalore Direct Flight
Cancellation Date: 1-Jun-2021
Ticket Amount:15519
PNR No. : H5NRD
Ticket No. :[protected]Aadya Chaturvedi)
Ticket No. :[protected]Dhruva Dutt Chaturvedi)
Ticket No. :[protected]Simarjeet Kaur)

We have sent multiple emails to [protected]@airindia.com but no response and called more than 15 times to[protected] every time customer care executive informed us refund in progress and we will receive a refund within 10 working days.