HDFC Bank — Money has been debited without any information

Address: Chennai

Since from morning i have checked my account balance and i had rupees 1, 351 on my account, exactly by 08:07pm today i went to debit money from my account but it showed me i have got rupees 64.38, i need, and it's too urgent u have to get tablets to my grandma, since the bank has debited this account for asd charges, i really don't know what is this, i need my money bank and this is not a proper way to take my money just like that please consider this as an emergency and get my money back which is rupees 1, 351
Thank you