Write to them telling them you revoke your TCPA (Telephone Cosumer Protection Act) consent if it is your mobile number. If they continue after that, you can sue for a TCPA violations up to $1500 per call and do not have to prove actual harm occurred.
Well that is news to me, since the CFPB has stated that the collection of student loans does fall under the FDCPA, and the numerous court cases charging Navient with FDCPA violations. "And I'm sorry, but you need to do research before posting inaccuracies. " You need to take your own advice.
The initial complaint filed should be an FDCPA case and a TCPA case added to it. It is up to the court to decide if there is any merit to the TCPA section of the complaint.
Your posting is full of inaccuracies - they call constantly even if you are making payments on the loan - plus they do not have my consent to call my cell phone since I never gave them that number nor permission - they ARE subject to Federal collection laws since they are attempting to collect a debt - in default or not. You obviously work for them or else you wouldn't defend harassment - either that or you're a Repubnican who ignores laws as a matter of existence. Go do something anatomically impossible to yourself.