How do I report a user?

Hi,
This guy http://forums.digitalpoint.com/member.php?u=145919 left message on my service thread:
http://forums.digitalpoint.com/showthread.php?t=717186&page=2
That he ordered some stumbles and they were never done.
I never got any message from him before and above all he just joined yesterday. He also left similar message on another thread http://forums.digitalpoint.com/showthread.php?t=726021
Please advise.
Thanks

 

Mods do not get involved with members disputes.

You can always red rep and negative trader him.

 

oh ok
I don't care then, I don't have time to deal with these kind of people. I would rather do something constructive.
Thanks m8