Cheat by pnb bank

My loan amount is 1,10,000 up to 2016 June I was take this loan amount for btech which was started from 2012 per year amount is 26000 now total is 1,10,000. But they told I have to pay 1,42,000 how it is possible which type interest laid on this amount they told it is with subsidy. I think this amount is large please suggest what we can I do. I don't get job yet. It is hard to get job after btech.