Bipolar disorder.

That's what i suspect A to be having. This person has been having crazy mood swings from hostility to amiability.

Like this morning, A had to call me with the pissed off voice expecting me to put something in the drawer. i mean, it's not classified wad? i apologised anyway. my fault. but A could have spoken in a better tone. hmph.

never mind. no point following "some people" who think small little problems mean the end of the world.