Indigo Airlines — Cancelling ticket without confirmation

Address: Thiruvananthapuram, Kerala, 695026

Website: www.goindigo.in

I bought a ticket.. Cok to tvm.
After that i got a message from indigo that my flight time rescheduled. Then my ticket were cancelled without my confirmation. But i bought ticket from via.com. They still have my ticket confirmed.in indigo my ticket is cancelled.
Pnr: p78lxi
Via.com booking no :fmn1yf3ujs4
What can i do.?
How can i retrieve it?
..