AFAIK, there are no known JBoss Group, LLC appointed representatives although the JBoss guys may like to correct this notion. Mortbay Consulting, a member of Core Developers Network may still provide support - Mortbay consulting wrote the Jetty servlet container. Amity Solutions provides support for customers using JBoss. There is also Tusc at http://www.tusc.com.au/. You may also wish to discuss your support needs with JBoss Group, LLC.
It depends on your needs for consulting, remote support and so on.