Neuros aren't known for their good bedside manners. Most are scientifically objective and have bad social skills & interact personally, very poorly.
That said, a specialist in PN would never say the things that you have quoted your neuro as saying.
You need a PN specialist, not some general neuro who's empathy wiring has burnt out.
The Mayo and your GP/PCP, working together, may be your best shot.
As to when...............NOW !