Catcher yeling during pitch

[Bluefoot]

I had a game yesterday where the catcher would yell out loud to his defense when the pitched ball was in the air and before it reached the batter. One batter complained to me that it was distracting him. Does Rule 6 (Slow Pitch) Section 4B apply? "The fielder shall not...act in a manner to distract the batter." If so, I would think that one warning for the first offense followed by ejection for a future occurence would be the proper procedure. Any input from the seasoned umps here would be appreciated. Thanks.