Hi everyone this scammer girl is trying to scam people I almost fall his user deswuynr

So like I was listing my scythe for trade and she offer it for nn and nightmare purse and then I accepted the offer and she said can u do like later I was eating like that, and until I saw him playing on baddies and I join him and trade him and she just change the offer to nn and a bunch of random thing and I was disappointed on it, and I last chat him u disappointed me and she said again sorry I well do the trade now earlier was my lil sis playing and I join him, and now she tried to scam me like this I hope devs found out his bloxstar account and banned him for trying to scam and trolling so now she's still trading things.