Bad business practice....yes under some kind of costumer
protection association....
Or maybe Good Business Association...
Im not sure the exact names of the organizations though (maybe
someone else here can help)
I think mostly it's just a "reputation" sanction/ punishment
under those conditions....
And if the police is not going to pursue the matter, I think
probably you cannot do that unless if you sue the company yourself
and engage your own lawyer to do that.
Telephone, I think you can try this:
http://www.yellowpages.com.sg/newiyp/
If you are interested to engage more professional help regarding
your dispute maybe you can also hire a PI (Private Investigator)
and you can google some for those.