Being stalked by another resident

I moved into my apartment block 2 years ago and for the whole of that period I have been stalked by another resident.  This man knows when I have arrived home and thus whenever I am parking my car, he always comes down to the garage and hangs around without any purpose and this is on a daily basis.

He also often hangs around outside my apartment pretending to be watering plants or doing gardening, when we already have a gardener and he is not on the body corporate.   I am elevated ground floor and have had to put all kinds of screening up on my balcony to protect my privacy because prior to doing so I would find him standing outside my balcony looking in.

If he hasn’t come down to the garage when I’ve arrived home, I find him outside my apartment in the evening pretending to be going to the garbage or for a walk.  This is on a constant basis.  I have taken many videos of him but because he has never threatened me so I don’t know if the police can do anything.

I have my apartment on the market, I will not live like this and would appreciate any assistance anyone can make.