first thing first, as they said, just do it even if you don't
understand, its for your own good.
if you want a much more simpler version, maybe i have an example
for you right here which i had just experienced myself last 2
months.
if you want to complain, find out ur slacker's relation with the
manager then move accordingly...don't do stupid moves like i did,
though i know how close they are together (in my case)
if you want to complain, get yourself ready with a complaint
letter, together with all the support that you can get from your
other hardworking personnels in the office by signing On The Paper
(to prove that they support you physically and not morally)
long explaination needed...so i shall not elaborate more...if
whatever you do in a new environment....always get the support
first...
for my case, i didnt get physical support so i lost my job and was
jobless for 1 and the half months back.
learn from my mistake alright?
cheers to a better working life.. 
