Disable Bluetooth

I have a 8830 it seems to be stuck in Bluetooth mode? Every time I attempt to make a call it defaults to the Bluetooth and I am unable to hear anything through the head set. The same is for all incoming calls, to hear any thing I have to go to options while making or recieving a call and choose ( Activate Headset ). I have gone into the Bluetooth setting and disabled the settings but continue to have to (Activate Headset ) for all incoming and outgoing calls? Please does anyone know how to set this back to just the head set?

I suggest you remove the device from the BlackBerry (un-pair it), do a battery pull. Once done, re-pair the Bluetooth device to the BlackBerry...