OMG......ugh......OMG!!!!!!!!!!!!!!

I just moved into an apartment.....on the first floor - with a lovely family living above me, I'm sure. The only problem is that it sounds like a freaking herd of elephants moving around up there.....so loud that at times I jump for fear that my ceiling is caving in. I have even witnessed ceiling dust floating to the floor when one of the parents must have body slammed their children into the ground. It makes me want to march up the stairs and just ream these people...not b/c I'm worried they are beating their children but b/c I am worried about my sanity. Every 30 seconds.....to hear these noises....and I'm not exaggerating either....is enough to send anyone to an insane asylum. I also find myself counting to 10 to see if I'm still mad - and usually I am, but have just given myself another 10 seconds to count...and then another and then another.....and by then I am worn out from counting to 10 a million times. But seriously, how do I handle this? Do I complain? Do I want to be "that" lady?