No such rule, if you wanted to prevent spam then add a cooldown between each taunt you do. Whoever handles this should also have a LT member speak to this moderator about his poor understanding of the rules if your story is true.
Clarky honestly, this Moderator needs to be retrained but seriously carefully. He had no idea what he was doing when it came to other rulebreakers but decides to warn me for a non existing rule. Maybe even demotion but i dont think it'll go that far.