Who do i talk to regarding this?

[Plsno]

I bought a lvl 55 dk via trade (3 weeks - 1 month ago) as i liked its name, i deleted it and renamed my main character to that of the one i bought and now its been flagged for rename? why? Please revert it back so that i can use that name and its not offensive in any way also. i do not understand why. If cannot use it then please refund me back my 30 coins. Thank you.