Why won't a top agent work with Holton Wise?

[Ken Virzi]

I have had some really bad interactions with James Wise over the years, but I always have pointed out that he is a reputable agent and he has built a good business. However, there have been enough red flags to make me wonder what is really happening. Recently I reached out to another reputable, well-respected agent in the Cleveland market and when talking about a property that was listed by James Wise, the agent informed me that he "won't deal with the company that has listed". This is another red flag, but I am wondering what would cause one agent to refuse to make an offer on a property based on the listing agent?