Hello,
Today I was buying graphite. Astargazer123 and me agreed upon making a deal. 64 copper for 16 graphite. I traded him the copper, he didn't trade me the graphite. Moreoever he admitted into what he called "trolling" me. Needless to say, I felt like being robbed and request action being taken.
Screenshots for proof.
EDIT: In addition he turned his spawn into a suffocation trap. Luckily I expected this and was able to tp out.