Navient Debt Collection Complaint

Navient Debt collection department,

Federal student loan Communication tactics Threatened to take legal action Indiana

Pioneer Credit Recovery, ( - ) -, - ( - ) -. -, Continually calling me at work asking after telling them I ca n't get calls like that at work. Attempting to collect a debt ( they say ) but the student loan has been approved for deferment. Will not stop calling me at work, resulting in me getting in trouble with my boss. They keep asking me to fax them stuff but I do not trust who they say they are and they refuse to send me anyting.