You done good with this coach/official.
As mentioned earlier, any time a coach starts a statement with "You", most likely it is going to be followed by something that questions your ability to officiate and/or implies your cheating for the other team.
Then it is your turn to have the "You" statements.
You have a T.
You must remain seated.
and if the coach is a slow learner.... Your partner can add some "you" statements.
You have another T.
You must leave the gym.
P.S. Welcome to the forum and the fun we have.