Indian Railway Catering & Tourism Corporation [IRCTC] — refund for ticket cancellation & refund for failure of ticket booking

Address:

Amravati, Maharashtra, 444701

A week ago when i tried to book a ticket by using android app of irctc. every thing works well but after the payment it gives error message but in mean while ticket amount deducted from my bank account.
several times i complaint about it to the irctc helpline, but they refused to consider it as any problem.
i mailed at [protected]@irctc.co.in but they just send ticket id and forget the problem.
so how can i get the refund for the same,
for above mentioned problem i sent my bank account statement to the [protected]@irctc.co.in but not received any reply from them.