Hexenadler, Nick and Hank were armed before Juliette ever walked into the spice shop. There was no reason for that. For that matter, neither one of them had any business even being there. Monroe had no business being there. The only one who should have been there was Rosalie. Nick and Hank escalated the situation by drawing their guns, and for what reason? Because Juliette wouldn't take the suppression potion.
The best way to frustrate a cyberbully is to ignore him.