Air India — air india air india not giving refunds back

Hi, I had booked 3 tickets from air India website - Air India Flight No.-AI 828, Date - 08 Dec 2019, Dep Time - 11:30 hrs, From Srinagar (SXR) To Delhi (DEL). Due to bad weather the flight was cancelled. So far, I have not received my refund. I called customer care multiple times, but they have no information on refund. I even mailed multiple times to ecommerce @airindia.in but so far, I have not received any response.