Air India — Refund for cancelled Flight

Address:

Air India, India

Hi,
I had a booking with air india, from Newark to Mumbai on 8th Aug 2021. They had cancelled the flight but haven’t notified about the cancellation. When I had used my itinerary number on AirIndia website, I was unable to retrieve the data. So called their customer care, and from there came to know about cancellation. That person had cancelled my ticket and asked me to wait until 21 days to get the full refund as flight was cancelled from Air India end. But haven’t received any reply yet from Air India on the multiple emails.

Any help would be really appreciated here?