According to my look for, the final HDB hotline is 1800-225-5432 . It's really a Department Business Service Line that operates on weekdays from eight:00 AM to 5:00 PM. Furthermore, you can find other Speak to numbers for specific services: * HDB Most important Line: 6490-1111 (for normal enquiries, weekdays https://hdbtowncouncilhotline210245544.blogspothub.com/36166543/hdb-town-council-hotline-210-22