That's a - Were The Invigilators Being Unreasonable? (Obviously).
I had my final exam today. It's a professional exam and a huge deal. I've been studying at a normal university (as opposed to a study centre type thing) and sat my exam at the university's exam hall amongst a mixture of undergraduate and postgraduate students.
About 10 mins into my exam, an invigilator come and stood in front of my desk, leaned against a door and began drumming on it with her fingers. This went on for a while. She then beckoned a fellow invigilator over and they chatted away. They then split for a short while only to come back and start up another conversation in front of me.
This kept happening and I tried my steeliest of glares to let them know they were disturbing me but to no avail. After about 2 hours of this back and forth chitty chattering, I cleared my throat very loudly and overtly stared at them as if to say 'just fuck off!' (I'd lost my patience by this point). Drumming invigilator gave me a glare and sniggered then they split up again.
At the end of the exam we were told to close our answer booklets and write down the questions numbers we had attempted on the front. Before I had even shut it, the drumming invigilator came and shoved her hand under my paper to take it away. I had to check what questions I'd attempted (there were a few) but she had her hand closing the paper shut. I asked to check it and she said no and took it away. So I didn't write anything on the front 
I froze and didn't say anything. It was so odd.
I was sat at the front of a huge room filled with students on a row on my own, mine was like an extra seat dotted on. She had scarpered off to collect the other papers and I didn't want to shout out so ended up leaving with everyone when told to.