Invalid did accept a trade with my consent (mouse under control by scammer)

Hello i have recently been scammed via a 3rd party program which was used to take control over my mouse cursor and complete a trade with my consent. he has stolen $27 worth of items off of me, including a 'value of team work painted bill's hat'; a peculiar drab tinge merc's muffler, festive rocket launcher and a pink as hell Robro 3000. those item's are currently in his alt account/friends inventory
here is the the steam 32bit URL to the profile of the 3rd party program user: STEAM_0:1:50369867
and here is the steam 32bit URL to the possible alt-account STEAM_0:1:67930990
i also have video proof of him using the 3rd party program to make the trade with my consent (his steam has possibly changed)
thank you for reading and i would appreciate any help if you need more information/proof i will get on to it

the title is wrong i was meant to say "DIDN'T" accept the trade with out my consent

Hello your format is improper.
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