Navient Student Loan Complaint

Navient Student loan department,

Non-federal student loan Can't repay my loan Can't decrease my monthly payments Minnesota

I keep getting harassed at my work of employment by Navient Solution student loans. My manager has spoke to them and stated not to call at my place of employment. That we do not take personal calls at work and to call my personal number. They still keep calling and bothering me. It is to the point that my job is on the line because of all the harassment that my company is looking to let me go. Please help. I am a service member and under SCRA I have been done wrong. Not only have they been adding interest, I was not promised my 6 % APR for my finance. This is just wrong and they wo n't stop to the point that it is ruining my credit. This is a crime.