Of course I'm displeased! [Ciel snaps, sweeping to this feet and turning his back on Sebastian in an attempt to...well...to not hit Sebastian in the face. Even seething as he is, he knows hitting Sebastian would be as pathetic as hitting a mewling kitten, considering how sick and discombobulated his butler is. And there's no telling if physical violence will just make Sebastian worse.
He takes a few moments to compose himself before looking at Sebastian over his shoulder and demanding:] Who would be pleased to have their mind raped, every thought taken from them as it forms? You should have informed me of such a skill. Did you not think it was important?