In my former existence , I would come across people such as your client on a daily basis and , in my own personal furstration at the imnpossible demands they would attempt to levvy on me , I would label them Emotional Vampires, basically because they manage to extract the very essence of physical and mental well bieng from everyone they encounter, leaving a trail the exhausted, the devastated, the overwhelmingly knackered and the deeply worried in their wake, whilst they carry on as if nothing has happened .

You have my absolute sympathies.