I deleted a few sites from the system. After which the following has happened:

1. All the departments have disappeared from the Departments Tab. They show up in other drop downs but one department comes multiple times

2. If I add a new technician I cannot see him in the Technician list. Searching does not help either. The technician can login and work normally but I cannot see him in the actual technician list 

I have no idea what is wrong. I need to delete a newly made technician but I cannot search him. Is there any other way ? 

Attaching all the screens 

 8.1.0 Build 8112

PLEASE HELP !!