After 5 years of on-time payments, my request for co-signer release stating " you are not making the required consecutive on-time principal and interest payments based upon our required standard for credit review criteria. " Navient needs to release my grandmother of XXXX years from this account. She is paying for XXXX care and needs to have this loan released. In the meantime, I am checking with banks to have it refinance. I do not believe that Navient is a reputable company.