You may call 202-663-1600. If additional documentation is needed, the Waiver Review Division will contact you directly. When a final determination has been made, you will be notified. Until you hear from the Waiver Review Division, therefore, the status of your case is considered 'open'. You should make whatever plans you need to make regarding your work, life in the U.S. or return to your home country on the assumption that you will not be recommended for a waiver.
Apply directly to the USCIS on Form I-612 Application for Waiver of the Foreign Residence Requirement.