I am a STEM master's student in a University in Europe. I am going to graduate next month and I need to settle the date of my defence and other bureaucratic matters with my second advisor. He had no role in my master's thesis project but has to be part of the committee on the day of my thesis defence.
The problem is: I have been trying to contact him for almost three weeks with no success. He ghosted me.
The question is: Should I try to contact the head of the department and report his behaviour (in order to get him answering)? Or should I forget about that and look for a different second advisor?
You should consider that: he has not answered any of my emails in the last weeks. The emails were 2-3 lines long. The academic staff working with him suggested me to call him on the phone in some particular days/hours in which he was there. I did it and he did not answer. I cannot go in person to the university since the access is restricted due to the Covid pandemic (and anyway the professor goes there rarely in this period as far as I have been told).
Also, I have been told that this professor behaved similarly with many other students, but usually they managed to "spontaneously" come across him at university (there was no pandemic at the time). Therefore, I am not really sure if contacting the head of department would ever change anything. On the other hand, looking for a different advisor might be as challenging as contacting this guy, since we are close to my graduation date and there are not many professors at my university who work in the field of my master's thesis.