Dependant on my lookup, the overall HDB hotline is 1800-225-5432 . It is just a Department Business Company Line that operates on weekdays from eight:00 AM to five:00 PM. On top of that, there are other contact numbers for specific services: * HDB Main Line: 6490-1111 (for general enquiries, weekdays https://hdbtowncouncilhotline210223332.blogdiloz.com/35989292/hdb-town-council-hotline-210-22