If your flight got cancelled, then you are entitled to the full refund. As you have booked via travel operator, you can claim from the travel operator, & not directly from the airline.
Though you have booked or flight got cancelled before this whole COVID 19 episode, your refund got delayed due to battering of airlines and travel operator because of the travel restrictions imposed due to coronavirus.
The Govt is in communication with the airlines/travel regarding the smooth and quick refund for all cancelled flights. It is a matter of time when these companies start refunding the customers.
Meanwhile, if you paid with your debit card, checking with your bank if chargeback for the amount paid for the flights is possible.
You are also well within your rights to initiate small court claim for the refund of the amount you have paid for, but I would advise trying to get it resolved amicably for now.
Only if the operator refuses to pay, opt for the legal recourse via small claim court.