Many fellow Malaysian neighbours don't care. Very selfish. As long as they are not the one being disturbed or affected, they won't bother. It's also unfortunate our local development and council policies do not help, especially with regulations such as how far apart houses should be, where to install aircon outdoor units, proper QC checks on floor slabs or walls. The list can go on and on. Moving to another place may not help, as one may get a "new" neighbour few years down the line at the new place, and the "merry-go-round-of-hell" starts, again.

Wish OP best of luck in dealing with the "upstairs-neighbour".