How do I complain about Travelio in Indonesia?

In escalating order: Travelio's own support, in writing, to build the paper trail. Then BPKN, the National Consumer Protection Agency, which receives complaints directly and creates an official record independent of the company. Then LAPOR! at lapor.go.id, the government complaint portal, which issues a reference number and routes to the responsible ministry. Then BPSK, your local Consumer Dispute Settlement Body, which hears cases through mediation or arbitration without requiring a lawyer and issues binding decisions — for a withheld deposit this is usually the strongest route available and the one most tenants never hear about. YLKI and MediaKonsumen add public pressure that private complaints do not.