I work at a fairly senior level in the pharma industry. I am well established and recognised as a high performer. However there has been a complete change in management and I am now being accused wrongly of under performing. New manager has come in and is deliberately looking for negative feedback. He is also telling colleagues I am behind target from timelines he has made up. This is affecting me as he is doing it in a clever way by putting very little on email and being vocal to change people's perceptions. I am also so busy I don't have the time to keep up with hm or to go around correcting colleagues.... It's complicated but how do I approach this? I have already had a one to be with him and it's of no use. He smiles and then carries on doing it....