Air Asia — refund request denied

We have made the booking bengaluru to kolkata prn y6z6xd. Total amount which i paid 51, 625 for 5 person.in this pandemic situation where all the tickets booking are cancelled and as per dgca guidelines new booking made between 25th march 2020 and 14th april 2020 for travel between 25 march and 3rd may, will be eligible for a full refund.
This information is also mention in air asia twitter account.

But air asia is not refunding the amount they are providing credit voucher which is waste for me, i am not frequent traveler, they are not replying the over email and twitter and their customer care ppls are worst they are not entertaining.