Talwalkars Fitness Solution — Non refund of amount for unused gym facilities during pandemic

I am an Army Officer and I had enrolled along with my son in Talwalkar Gym in Kolkata( BE-72, Sector-1, Near Swimming pool, Salt Lake, PIN: 700091). The details are as follows:
1) Self: Brig Dr P S Moulick ( Date of Activation:17 Feb 2020. Validity upto:17 Jun2020). Amount paid Rs 8500. Facilities of gym utilised before lockdown on 25 Mar 2020:37 days. Refund amount:Rs 5879.
2) Son: Siddharth Moulick( Date of Activation: 11 Mar 2020. Validity upto: 10 Jul 2020. Amount paid Rs 9100. Facilities of gym utilised before lockdown on 25 Mar 2020: 14 days.Refund amount Rs 8038.
Total amount for refund to customer: Rs 13917.
Since past 9 months the gym is closed and no intimation has been given to the consumer as when it will open and also about the refund. If the gym is not opening then money should be refunded at the earliest.
Thank you
Brig Dr P S Moulick
Mobile: [protected]
Email: [protected]@gmail.com