Lots of interviews without a respond(4). At the 4th interview , with the head of the department they took a picture of me, they said it's required for the process. They didn't answer my calls. They called me 3 years later to do an interview for the same position.

The hiring manager wants you but doesn’t have you; this is probably the only time in your relationship with a new employer when you have even a slim negotiating edge, so use it