Airindia — amount debited from my account but not refunded back as the air ticket not generated

I was trying to book a ticket, the amount has been deducted from my account vide aibe5695704 but tickets not generated for pnr ymh1s. Requested the air india airlines to credit back the amount of rs 13894. They confirmed that they received the amount but could not generate tickets because of time out. But still not credited back the amount. Kindly help in this regard to get back the amount as already more than 20 days over.