Scam?

A player named Alwaysdodge said if I give him Royal kitter pet egg he will give me EA cloth set +20 and EA orb +20. But I didn't have it at that time. Alwaysdodge tells me it's a really rare pet. So alwaysdodge logs off and Pface is selling Royal kitter in LFG and Pface said if I give him woc2 he will give me royal kitter. I felt forced to give my woc2 to Pface for royal kitter because alwaysdodge said it was extremely rare. I feel tricked because my woc2 was +12 and I felt like alwaysdodge tricked me. I have mailed him but he hasn't responded back and I spoke to a GM and they said they aren't responsible for trades but this is my only piece of proof (as I didn't know this situation would arise)
http://imgur.com/a/ren1a
In the screen you can see Pface saying he isn't gonna give my woc2 back because it was a "fair trade" I don't think woc2 for a pet is fair, but I did the trade because I felt like alwaysdodge tricked me into thinking the pet was really rare.

Can my woc2 + 12 be returned or am I stuck having to get a new woc2? I did google royal kitter and I didn't find where it was from so I thought it was rare too but I did do a bit of research before I did the trade. But now I feel tricked into giving my woc2 to Pface because of alwaysdodge. Can a GM help?

 

@Korra2
This is a well-known tactic unfortunately. The two players must have worked together (unless it was only one with double accounts open) to trick you into trading your OP items for something that otherwise you wouldn't trade for such a thing.
You must be careful on who you trust and who you make business with. As the Staff member said, there is nothing really to do about it other than telling you to be more cautious next time.

Sorry for your loss tho, you must learn from it for next time ~