Invalid http://steamcommunity.com/profiles/76561198047199686/ (cookies_monster)

I recently got scammed by cookies_monster:
cookies_monster was claiming to be selling diamonds on dungeon defenders, so i joined the server and he wanted keys and some haunted halloween items for it so im like sure we go both trades ready for it. I make trade to him for the tf2 items and he was "surpose" to make trade on dungeon defenders for the diamond instead he took the items and kicked me from the server.
I knew i should not have trusted him but i did. ive added him as a friend waiting for him to give me back items ive also informed one of ur tf2tp admins who said this.
Chimi Battles the Pink Robots: 5:52 AM - Chimi Battles the Pink Robots: Hey
5:53 AM - cookies_monster: hello?
5:53 AM - cookies_monster: u are
5:53 AM - Chimi Battles the Pink Robots: I'm with SteamRep - someone named PsychicDude is telling me you scammed him out of 2 keys, some halloween costumes, and other stuff
5:53 AM - Chimi Battles the Pink Robots: If you don't give the stuff back you'll be marked as a scammer
5:53 AM - cookies_monster: whats that mean
5:53 AM - Chimi Battles the Pink Robots: You'll be banned from a ton of trading websites, and no one will trade with you again
5:53 AM - Chimi Battles the Pink Robots: serious stuff
5:54 AM - cookies_monster: ok
5:54 AM - Chimi Battles the Pink Robots: Just thought you should know
5:54 AM - cookies_monster: arent u allowd to scam
5:54 AM - Chimi Battles the Pink Robots: Not without repurcussions
5:54 AM - cookies_monster: heaps of people have done it to em
5:55 AM - cookies_monster: can i give him the thing he bought ?
5:54 AM - Chimi Battles the Pink Robots: Did you report them to SteamRep, like PsychicDude just did about you?
5:55 AM - cookies_monster: no
5:55 AM - Chimi Battles the Pink Robots: There's the thing then
5:55 AM - Chimi Battles the Pink Robots: http://steamcommunity.com/profiles/76561198028609632/
5:55 AM - Chimi Battles the Pink Robots: Just add him
5:55 AM - Chimi Battles the Pink Robots: give his stuff back
5:55 AM - cookies_monster: i dont have half it
5:55 AM - Chimi Battles the Pink Robots: Looks like you'll be getting marked as a scammer then
5:56 AM - cookies_monster: can i give him what he bought
5:56 AM - Chimi Battles the Pink Robots: I would hope you would
5:56 AM - cookies_monster: ok
5:56 AM - cookies_monster: cool i will then
He still hasnt done this i would really like my stuff back or get the diamond.
I also got some screen shots of the stuff.
http://steamcommunity.com/profiles/76561198028609632/screenshots/
Thank you for your time.

Hello again,

Please upload a screenshot of chat as proof, because we can't be 100% of what you are saying.

Chimi Battles the Pink Robots:
A tf2tp mod/admin should have proof of it

http://steamcommunity.com/id/otacon/

Please mark this report as Invalid. I will work with PsychicDude in creating a successful report.