GoAir — wanted to cancel my 19.3.20 chennai to pune ticket. unable to do. customer care delhi, mumbai, chennai, pune telephone including toll free not respond

Address:

GoAIR,Lohegaon Airport,411032, 411004

Initially ticket was booked to and fro on 9/3/20 to chennai from pune and return on 15/3/20 from chennai to pune.
Traveled on 9/3/20 to chennai.
But on 15/3/20 had to post pone to 19/3/20 due to corona pandemic.
Now i have already reached pune due to some urgent work so wanted to cancel for 19/3/20 but the online portal is not permitting me to continue. I have already lost some rs 4, 800 for rescheduling now no refund on cancellation in world crisis.
Very harrowing experience. No one is picking and responding also.
I have written a mail to their nodal officer 14/3/20 and 17/3/20. They have not even acknowledged.
My pnr is ayiktq pune to chennai and chennai to pune.
I want refund in full because it is a world pandemic and i am a regular customer.