According to my search, the overall HDB hotline is 1800-225-5432 . It is just a Department Business Service Line that operates on weekdays from 8:00 AM to 5:00 PM. In addition, you can find other Call quantities for unique services: * HDB Main Line: 6490-1111 (for common enquiries, weekdays 8:thirty https://hdb-town-council-hotline22221.vidublog.com/36087199/hdb-town-council-hotline-210-22