Bank Of India — I am complaining about my loan recovery

Address:

New Delhi, Delhi, 110065

I took loan of 150000 on may 2016 and bank debited some amount from my account every month but now they said that it is only interest not principal amount and they forced me to submit 56000 as a principal amount. I borrowed the money from outside at 5% monthly interest. It was bank fault why the i didn't debit amount and why they didn't tell me from last 18 months. Now they forced me to give them all amount