How do you manage when colleagues are being mean to a guest academic?

No names, no specifics of location, just a situation.

A guest acadmic in one of the EU's countries feels like local colleagues (if not internationals too) are being mean to them. They are polite but.... Total disinterest in their work, emails and request for meetings could be simply ignored, or canceled last minute, no invitation for internal events in the department, no help with networking inside the institution and the country, informal communication is impossible endeavor as everyone immediately excuse themselves.

Yeah that could be not only because of the guest status. The local academic treat each other quite in similar way. The departments web-site does not provide any info on internally organized events at all. And one of the faculty members had to leave department. It looks like gender discrimination was in play in this case.

On the other hand, thing like these are always intersectional so in addition we have here the regional differences when locals tend to look down on the region where visiting academic comes from.

I am here however not just to complain but ask experienced colleagues how did you managed to deal with situations like these? (there are reasons that do not allow to quit the scholarship right away)