WordPress.org Live Help
WordPress.org live help is like a community support. If you are looking for a wordpress.org support and looking for a contact number you can stop looking for it. Like wordpress.com there is no phone support. The best way is to go the support forums where a number of people might able to help you on your wordpress.org issues. And in the forums, this is like a community based support. Where wordpress customers on the forum helps you regarding to your concern.
WordPress IRC Live Help
WordPress irc is a live chat support where you can get a support from wordpress enthusiast and experts, questions are entertaine in live chat, but it is much easier if you use wordpress forums.
Live Phone Support
Call Toll Free: +1-888-818-9916 (US & Canada) OR +44-161-7680140 (UK) for instant WordPress Support.