Less than $10k loan, can go small claim Tribunals (think this is
within one year) or ask debt collector.
Less than $60k, see
this http://cjc.org.sg/images/brochures/PJP_PrimaryJusticProject.pdf
cheaper than getting a lawyer directly...
Above $60k, go CrimsonLogic and fill up Requisition
Form or get a lawyer to
sue...