My cousins who went in NS last year and last last year told
me...
There's 1 SAF hotline where parents can call and complain... then
the personnel will annouce on the speaker... to everyone...
For example: Your mother calls the SAF hotline to remind you to cal
home, then the personnel will annouce on the speaker to the whole
world, "John Tan, ur mother called to remind u to call home, if u
dun call home, ur mother will call me!" 
Then they also said, there's no such things as late night wake you
up to train liao... and if they do, do that... and you go back home
with a black eye... not enough sleep... ur parents can call the SAF
hotline to complain... 
Then they also said during training when you really very tired
liao, they won't push you to the max 1, they'll ask you to
stop.
They they also said if you can't swim, you'll have to wear a red
band, so they'll specially protect you and teach you swimming...
but infact, they bring you go play water...
Then they also said if you not happy with the food, can go canteen
buy...
Then they also said the officers not so fierce, won't shout shout
at you unreasonably 1...
Nowadays NS so civilised 1 ar? Like summer camp... then they keep
reminding my parents, if anything, your son suffer or what, you not
happy... call the SAF hotine!!!!