Cleartrip — not issuing air ticket refund

A ticket was booked from kolkata to doha dated march 22 which was cancelled due to corona pandemic lockdown. Its been around 6months and there has not been any update when the flight can resume. So, i had to cancel the ticket. Tried to contact cleartrip ever since but there is no update regarding the refund or any update from them. I like to have full refund of the ticket and like to seek help regarding the same.