Need to get an account disabled!

I want to disable this steam account

USERNAME: killoic

I went first to guy, he was buying css acc. I went on teamviewer and logged into steam community through his computer, then he hit REmember password on Mozzila Firefox, anyways he then got the saved password and change the acc PW. Please if anyone knows how to disable it,, that would be helpful

 

Make an account and contact:

https://support.steampowered.com/

I wouldn't tell them you were trying to sell your account, just say it was stolen.

 

kk thanks man...