Being in Canada, I strongly urge you NOT to take a recorder into a secondary meeting with this freaking quack, as it is against the law to audio-record someone without their knowledge. You could not use that to take him to the Medical Review Board, or anywhere else, and it would not be admissible in court if you decided down the road to sue him. In fact, he could counter charge you with eavesdropping, and entrapment.
I have no experience with Ontario hospitals outside of CHEO and Sick Kids, so I have no helpful advice on finding a professional who will actually listen to you, and give you the diagnosis you so deserve.
To the person who asked why she so wanted the diagnosis, most programs in Nova Scotia (so I assume Ontario would be similar) require a confirmed diagnosis to qualify for their support, be it social, emotional, or financial. If she obtains a confirmed diagnosis, she will have access to diagnosis specific supports, as well as federal and provincial disability benefits.