What the HECK?!

[Parallo]

You probably aren't, but none the less it has stopped many silly people from spamming normal players such as myself as I have witnessed first hand. In addition you shouldn't use more than three smilies in a row according to forum rules.

[Raa]

...Whatever. 

[neko kyouran]

i'm willing to bet this person knew exactly what they were doing.  they merely just said they didn't know how to use the challenge command so they could get you to do it and get struck down by the automatic spam filtering system.  so they know the system well enough to know how to abuse it ooc'ly.  and unfortunately you fell for their trap.

all i can suggest is to PM the chat log of the incident to the GM staff for review.  in the future, just get a GM involved.