If a loan company committed fraud, then of course there will be repercussions. Those are repercussions that will be born by the loan company. I believe that was what happened with Navient(yes I have heard of them). I have also, like you, gotten a letter from our student loan company because, oops, we accidently lowered your interest rate so yeah you really owe more money than you thought. Paying back almost 300,000 of student loan debt here.
A loan company committing fraud and someone not knowing the terms of their loan are two different things.