Book My Yatra — refund and boarding difficulty.

I booked the flight tickets through yatra.com with PNR H216L, booking ref no-[protected], date of travel 10th August from portblair-kolkatta-bhubaneswar(AI-788/9719).
Due to pre pone of flight schedule by AI 9719(kolkatta to bhubaneswar), I couldn't travel.Moreover airlines cancelled my flight from portblair-kolkatta PNR.when I queued for boarding pass, counter staff told at portblair airport.
Again I called customer care of Indian airlines, after many conversation, they told, with ticket no, you can request counter staff, then only you can travel.
Time was not sufficient, again due to very data slow at airport, I could not got tickets no.i requested customer care of AI, even though they know the ticket no, still they won't give me.
I booked the tickets through Yatra. No where ticket no shown.
At last counter at airport, helped, and I travelled from port Blair to Kolkata.
Pl refund total amount from Kolkata to Bhubaneswar.