I would tell them to stop being disrespectfull or he will be punished. If he continues to be disrespectfull I will gag him for the time I think is suitable. If he after that doesn't stop I would gather proof and send it to an admin to get him banned.
The player could disrespect in chat as well as voice chat.
After the verbal warning, if they continue you would gag/mute and warn them.
Can be trusted
Nice to play with in-game
Good activity
After you have improved your app with the information above, the only negative I see is you should play on server 2.