J.W.
Someone posted about this a week ago, it is a scam. They are taking advantage of the perception that banks are screwing mortgage holders.
Lets just say for laughs your payment amount was miscalculated so you have been paying 100 more than you were supposed to if properly amortized. You just paid down your principle quicker. You saved money, what exactly are your damages? Say they calculated it 100 too low, yes you paid more in interest but you also had the money to invest and earn money, since they would not have charged you penalties you again have no damages.
It is a scam.