Based upon my research, the final HDB hotline is 1800-225-5432 . It's really a Department Workplace Support Line that operates on weekdays from 8:00 AM to 5:00 PM. In addition, you can find other Get hold of figures for distinct expert services: * HDB Key Line: 6490-1111 (for normal enquiries, https://annex098htf1.wikinarration.com/user