EDIT: profile link
This probably belongs to the reputation section instead of scam accusations since there is no verifiable scam going on. It might be that he is giving you an unethical way of farming merits which is definitely not acceptable by the forum community, but he's not really scamming you either.
This guy will get a negative trust if DT guys can verify that he's legitimately farming/selling merits or merit abuse methods.
He won't get banned, as Madz said it's just not a bannable offense. I doubt he'll even respond to you now with the info after he sees this scam accusation thread. Just make sure that you don't abuse the merit system, and you will be fine.