Morning Star Travels — Star airlines Not refunded my Amount after 8 months

Address:

P 5 A Singh Building 2nd floor Pandav nagar Mayur Vihar phase one

I have booked a flight ticket from Star Airlines website on 29th Mar-2020. The ticket was cancelled due to a Locked down in the nation, The ticket was a trip from HUbballi (Karnataka) to Delhi departure date 26th march 2020. I haven't received any refund from Airlines till now they are refused to give a refund, they said you can use that amount only for rebooking the ticket, I have raised a request for ticket booking also but I am not getting any good response fro them, everyone is lying and not giving my amount back

Please help me to get my amount refund.