Declined 76561198017557565 (Ha Stole Ur Pie)

Victim: [F2P] Klez
steamID: [F2P]Klez
steamID32: STEAM_0:1:25625000
steamID64: http://steamcommunity.com/profiles/76561198011515729
customURL: http://steamcommunity.com/id/76561198011515729
steamrepURL: http://steamrep.com/profiles/76561198011515729

Scammer: Ha Stole Ur Pie
steamID: Ha Stole Ur Pie
steamID32: STEAM_0:1:28645918
steamID64: http://steamcommunity.com/profiles/76561198017557565
customURL:
steamrepURL: http://steamrep.com/profiles/76561198017557565

Summary: A few days ago I made a trade on the outpost that I was buying a CS:GO preorder for 9 keys.
Later on someone added me and invited me to a trade . I used this image (http://i.imgur.com/sNOrR.jpg)
as a guide to tell the difference between preorder and beta. He put up CS:GO onto the trade and seeing that it had a long description to it, I accepted the trade. Dumbass me didn't see the "Beta Gift" text in the description and took a few days for me to actually notice it was a beta.
I apologize for not having any screenshots of the trade or conversation as I didn't expect to get scammed. But I do have a screenshot of my trade history.

http://imgur.com/a/W8tkX

Can't do much without the chat screenshot.

This is probably all the information I can get of the trade, and as I said before I am sorry for not having them.

I'm afraid that without knowing what the agreement was, by having a screenshot of your chat, we can't really do anything.