fuck!!

Sorry for the language but i just got a pm from a guy on sythe named korn something saying i scammed him and i was on the irc and he thought it was me. i was not on the irc today at all i had a keylogger and i just deleted it so now i know the reason i got hacked the other week and i didnt know i had one so can i ask if i can have a mod change my /msg nickserv identify (the password) changed for me to something else because the guy can still get on irc. thanks.