Indian Overseas Bank — amount debited automatically from my account

In my account no.[protected] from the indian overseas bank iob, ecil x road hyderabad, the sum of amount of rs 4494 has debited automacally and i have called the toll-free number but no use they said to approach bank in this cerfew how can i, then i called directly bank support but no use please consider this as a serious complaint and do need ful