Indigo Airlines — ticket cancellation and not refund

Website:

Ingigo

I am booked a flight from blr to jai and jai to blr both way.
After booking i saw my one way flight wrongly selected i call the customer care they say your one side flight changed if you give a new pnr in one hour and your full payment refunded if one side journey.
I check pnr on 19 jul found my both way flight cancelled without my knowledge and payment not refunded.
Pnr no vicy3e