Patricia, sorry you've had such a rough day! I think most neuros are just totally ignorant about MG. You're in the same boat I am. I've had 2 neuros say MG, the 1st of those being an MG specialitst, and 2 recent ones say no. Fortunately, I've got a caring GP on my side who has seen me at my worst, and keeps me supplied with Mestinon. Sound like you need to stick with the stand in dr who saw you after the high and mighty neuro finished tearing you down. If she opens up her own practice, follow her!! I can't believe they've lost your blood test results. You don't reckon they lost it on purpose if it contradicted the neuro, do you!!
Best advice would be to ask for the stand in every time you need to go, and just hope she opens up her own practice soon.
Hugs,