Quick google tells me that there's no good timeline. It could take weeks, it could take up to two years.
I did find this:
Log in to StudentAid.gov to check your application status, or call the Borrower Defense hotline at 1-855-279-6207 Monday through Friday from 8 a.m. to 8 p.m. Eastern time (ET)
Good luck!
F8 EQ: 807 | EX: 785 | TU: 790 | Accounts: 1/6 3/12 6/24 | Reporting: AZE8