Air India — Cancellation of tickets without any intimation

I have purchased ticket frm kochi to delhi and then to guahati on 04/06/2016 and my ticket no:098-[protected]. And a fare of 10681/- got deducted from my account. On the day of travelling, when i went for boarding pass, i came to know that my ticket got cancelled. My date of travellingg was 14 aug, till this date i didnt get any intimations regarding cancellation and i didnt get my refund