The group can't help you either. They don't have the power to unsubscribe you. Your mail will be distributed to them, and hopefully they will respond. When you first subscribe, the mailing list program sends you a message with its most important commands. This information will be useful to you later, so be sure to save that message .
Many commands are program specific.
Turn off your automatic signature when communicating with listserv . Coke machines don't care who you are. Lurk before you post. All listserv commands are case insensitive. The most important is the subscribe command.