Navient Solutions, Inc. Student Loan Complaint

Navient Solutions, Inc. Student loan department,

Non-federal student loan Dealing with my lender or servicer Trouble with how payments are handled Virginia

After my bankruptcy this loan was was the only one I could not bring back to a current status and I 've been working with a third party agency via - -/Navient making payments each month. I 've been in an arrangement for over 2 yrs making on time payments. I received a call today threatening to take me to court for this loan. The caller would not mail me anything and informed me if I would n't work with him by phone they 'd just do what they have to do. I explained to him I have a payment book that this is set up with monthly auto debits and I am on my job and I did n't have the information readily available. I asked could he email me or send me anything in writing he said no. He said many people said they were working with - like me and loans must have been pulled from them. Why must the call become hostile or threatening because I asked for something in writing? The phone number was - for all I know it could be fraud.