I don't like ambiguous voice mail messages that attempt some sort of authority or imply an obligation on my part to return the call.
MX Energy called and said they "need" to have me call them back. Yah right, no thanks losers. I saved the voicemail and will post it up here when I have an extra moment.
I have received two voicemails from them as well. Smells of a scam. We don't use any company by that name, I'm guessing they are attempting to switch electricity providers on people.