This is the normal process:
1. Case is DQ'd by NVC.
2. Case then enters NVC queue for your consulate and waits at NVC.
3. Consulate informs NVC of available interview date for upcoming month.
4. NVC schedules interview when case reaches the front of the queue for that consulate.
5. NVC notifies person of interview date via email.
6. NVC then sends case to consulate.
After the interview is scheduled, it can take several days to several weeks for the consulate to receive the case.