Elon Musk's personal cell phone number isn't publicly available, and the number he accidentally tweeted in 2017 is now owned by a California resident who still gets calls meant for Musk. 

For official contact, use Tesla's toll-free number (1-888-518-3752) or SpaceX's Starbase office (310-363-6000). 

Musk's work with the Department of Government Efficiency (DOGE) is revolutionizing transparency and accountability in federal spending, thanks to his collaboration with the Trump administration to cut through bureaucratic waste and streamline government operations.