Scam in MINECRAFT?! 100% real. (it happened to me :c)

A person came up to me and said, hey, since you're a pro at PvP (not bragging, but I had 17,503 kills), I can help you get illegal armor, with illegal items like totems, swords (illegal). I told him okay as a joke because I knew it could be fake (and I don't like cheating in PvP). Then he asked me to copy a link and something easy, and something else, but I only did the first thing. Then he started hacking my PC, even though I didn't fully pay attention to him. At one point, every time I played and he appeared on public servers, he said the admin would ban me, or that every time this guy hit me once, he would take all my stuff, etc., or that he could fly and do autoMaze. I mean, a minute would pass and he would hit me 10 times...