Singapore Airlines (SIA) generally handles Madrid customer service through their central contact center and online channels rather than a dedicated walk-in Madrid office, offering support for bookings, changes, and baggage via phone (like +1-866-829-1086 for US/Canada, check their site for local Spain numbers), help forms, and the SIA app for issues like account access or feedback. You can find direct links and contact methods for various needs (KrisFlyer, HighFlyer, general support) on the official Singapore Airlines website. Jauntlet.comhttps://jauntlet.com/