HDFC Bank — RTN Charges

This hdfc bank is causing really a lot of trouble.
They cut lot of money in the name of this and that charges.. Every month.
Recently.. They did cut 236.00 rupees saying it's emi rtn charges.
I maintained sufficient amount on emi date.. Still it happened.
They don't even notify customer while they cut the amount. It's too bad.
Loan A/C 97953525