Inbounds Ball-ball-ball shouting by defender

[Flimflam]

Just got instruction from the head of our referee organization to do nothing when defenders are screaming BALL BALL BALL as they stand in front of the inbounding opposing player. I believe this behaviour has no part in the game. I personally blow the whistle, tell the defender that we 'don't do that here', at which point they always stop the nonsense, and we carry on. I have never called a technical for this behaviour, but I consider it an option.

I've been told that this is not in the rule book and therefore we should not intervene. I suggest that it should be handled like any other unwritten unsportsmanlike behaviour. A comparison would be screaming at a player about to try a layup.

Do any other associations have a policy regarding the handling of inbounds screaming? Allow it, or warn and penalize ?