Someone who is being hater on me leaved me bad comment on my profile account..he/she wants get me down.. My clients very happy in my service..thats why others putting bad comment eventhough its not true..im very disappointed about it..how can i deleted the bad comment thats someone whom i never known and meet before..pleas help me its really bad in my profile account

Hi,
Your can write a report about him. When you receive a message, you can provide feedback for the guy who sent the message. This feedback will be provided anonymously to other services providers when they receive a message from the same guy. 
Thanks,Claire.