Without more information we cannot assist you generally. If this person promised to gift you something in exchange for Treasure Cards, be sensible young Wizards, and ask yourselves if this person is really going to give you an item worth $30 of real money just for a few free Treasure Cards - the answer is, no, they're not. They're going to take your Treasure Cards and disappear. It's not a very nice thing to do, but all trades must be agreed upon by both parties. If the trade sounds too good to be true, it probably is, so don't accept the trade.
Please remember, reporting someone for 'scamming' you out of Treasure Cards is not valid, since you both had to agree to the trade. If what you see in the Trade window is not fair, regardless of what the player told you, don't agree to the trade, simple as that. Caveat emptor is a very powerful lesson to learn, young Wizards. Buyer Beware.
Hi, I was recently scammed by another user, what do I do about this, can I send it and someone will work their magic?
exactly how did they scam you? This may or may not be a reasonable claim. I would advise having all the information about what you were scammed out of and who did it. Send in your user name and see what KI might do.