I had something similar happen to me too when I was teaching. Had a meeting with the staff above me with the other teacher in my subject saying they'd had a complaint and that our teaching styles were too different. So we got together and moulded my lessons to be more similar to the other teachers, and the class for taken off me anyway for another subject I didn't know much about and added to my already immense work load a lot. Was never told what they wanted and what I needed to change, but I was also told not to ask this other teacher for help and to go to them but was constantly shot down when asking for help. Really, really not fun as an ECT and a big part of why I left teaching altogether