I think maybe I should unplug my landline.  Someone rang this morning again.  So I woke into a panic attack triggered by the sound of the phone ringing, and have been badly anxious all day every since.  This is not the first time this has happened.  It's always stressful when the phone rings, but it's worst when it wakes me up - it's so horrible being jerked awake full of panic and fear, my heart pounding, my chest tight, my whole body full of adrenaline.  I'm back to never being able to answer the phone again anyway, so I might as well unplug it.