If you want to talk to sandy alone, there is a PM function supported by the forum
Anyhow you don't really need to link those scammers accounts, it does not matter if they all belong to the same person or not, they are all gift-card scammers who are tagged by at least one DT member, what you could do is create flags against those scammers and ask for support, I am sure more DT members are willing to support flags against scammers than just accounts that might be connected to one another.