I've seen your trust rating left on this user, to me, your actions are ridiculous, I've seen people give 20% discounts on things before without you or anyone else taking any action, but, if it is giftcards, you suspect it is fraud?
You literally have no evidence against these people
I'm sorry that people from third world countries work hard to gain these giftcards then sell them at a discount to turn their money quickly
I also see other people following you, giving negs without any evidence whatsoever

But hey, if you think what you think should alter everyone's perception, then go ahead, make ratings without having ground to stand on