My experience with bad contractor (main con) & his sub-contractor.

Main con: HENG AIK SIONG (Star Home Renovation), knows only tiling work, will collect $$$ & talk talk talk.
Sub con: MURUGAYA@EMGI@SAM (Buildfact Enterprise), a fat indian guy who is really irresponsible & knows nothing about renovation.
Overall, 80% of the work done but with bad workmanship. The finishing works are non-existence. Waterproofing are done extremely poor. Tiling works are of 2nd grade. Luckily I did not pay them the whole amount, left 15% of the total amount. Beware!!!