Every time, I try to ignore someone(which happens with distressing frequency)
It says That person isn't online/on my friends list and nothing happens.
Anyone have any ideas of what I should do?
Probably you cant ignore people that isnt in your friends list, if so, are they whispering you? Try Add'em, then ignore, then delete S:
© 2013 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.