I had this problem almost exactly 1 year ago.... our B of A loan sold to Nationstar. I resolved it with B of A at that time. They made an error.
Just received a letter from nationstar saying our mortgage interest rate was increasing by 0% changing from 6.75 to 6.75, however the payment is going up by of $300.00. I called, asked for further investigating and received the same reply.
Then I called and they said that in order to pay off the loan by the end date, they have to raise the payment.
Does this seem right? Is it legal?
I have NO idea how I could double check this calculation myself!