Nationstar Mortgage Interest Rate changed from 6.5% to 11.12% due to an unfortunate situation Dallas Texas

In order to save my house due to a layoff, Nationstar had me sign a loan modification.  This modification took my interest rate from 6.5% to 11.12% (obsurd), but was trying to save my home.  They informed me that after two years of consistent on-time payments, we could revisit this and get the interest rate back down.  Each time they sent someone to do the appraisal (at $400 each time), the value kept decreasing even though I was constantly sinking money into the home.  I am still at the same rate after 8 years of this.  It appears that I will never get this house paid off.  It is ludacris to think that this is even legal.  They are the worst that I have ever dealt with, and half tempted to let the house go, so that way I never would have to deal with them again.