and Jesus continually speak to satan and his demons. There are many account in the old and new testiment where they talk to satan.
In the account of job, when Jehovah and the angels where having a "meeting" Satan walk right to the front and spoke to Jehovah. He didnt go and tell him to sit at the back of the hall,and he didnt tell no one not to listen to such an evil apostate, he addressed his accusations. So did Jesus when he was in the desert.
So if its ok for them, to speak to apostates, its should be ok for us!!!!
Just a thought