Called a business - said a friend referred for a home security system. No friend would do that! Said to press 1 to speak to someone or 2 to be removed so I, of course, pressed 2 - we shall see if it worked.
I've received two calls from this number; said a friend referred for a free home security system and to press 1 to speak to someone or 2 to be removed. I just hung up. If you call the number it'll come up with the "be removed" message.