The other people exploited something, not simply walked up and pressed B on their keyboard. The OP tried to report it, albeit through the wrong channels, an attempt was made. My point was the fact the other guy reported it quite a while back and nothing has been done about it. Yet this is met with a permaban in less than 24 hours. The market deconstruction at best should have been met with a temp ban honestly. It was NQ's screwup and they didn't verify things before they called the job completed. If anything, it exposed another issue of market orders being tied to constructs apparently.
Just to be clear, I mostly agree with you that exploits that are taken advantage of need to be addressed with a ban hammer. But going from no previous consequences to a perma-ban over something that NQ screwed up is too extreme. Given the laziness of NQ to not anticipate as well as fully test something before executing is bad practice and shows a grim outlook on this game when the players are the ones that get the short end of the stick.