Would you confront this guy?

So I have a coworker[A] who refuses to talk to me and gets others to ask for supplies he needs. His proxy [B] came by my office today with a printout from Amazon of a computer cable [A] wanted and said '[A] wanted me to ask you to order this.' I said 'so he sent you?'. He said 'yes, I think he's afraid of you.' After [B] left, I threw that piece of paper in the trash. If [A] needs it, he can ask me himself. I thought about going to him and telling him communication doesn't work that way, and ask what his problem with me is, but then I thought why waste my time on that fool?