Air India — payment debited but ticket not booked

Flight number: ai 933
Name: r sugathan
Delhi to kochi

I tried booking this flight on the 22nd of december and the amount was debited from but payment gateway failed (Upi gateway) and i did not receive the ticket. I called the customer care number and they told me that the ticket was automatically registered as cancelled and the amount of rs. 6186 will be reverted if i email at air india customer relations. I have emailed them but i did not receive any reply.