Air India — Refund against E- tickets number[protected]/[protected]

Dear Air India, I am following up from last three months to initiatemy Son and daughter refunf against above mentioned tickets number but till now no response from e - commerce department.
But seems no one bothered to reply.
Flights cancelled due to covid 19 which was scheduled on 05th May 2021 but till date no refund received.
Please initiate refund amount ASAP.