Knightofni - you have got to understand how your character acts is going to have consequences. If you come barrelling into a group of vampires shouting your mouth off and making demands then you are going to a hostile response. Did you honestly think your character could come in angry and shouting, and the Council, most of which have just been through a horrific battle, are going to sit and take it?
You made things worse when by instead of simply answering the Duke you decided to get right into his face and mouth off at him. He is a 1000 year old Blood Dragon lord, what did you expect him to do?
Finally, I am sorry, but when it comes down to it the only people who would take the Duke down a peg or two would be Vekarin or Walach.