I was chatting on the boards in early 2010, I literally made this comment about an item stocking in a main shop.
Something along the lines of, "Oh haha, a green item for 420 nps "
I was permanently silenced, and TNT refused to answer any of my tickets for two years.
One day randomly in 2012 I opened a new ticket and they didn't even respond, just lifted the perma silence.
It was really fucking random and stupid.