That's pretty bizarre what's going on for you in Canada. Have you tried other dealers, even ones that are 200+ miles away? Are they incompetent? If they're all like that, that strikes me as weird that Nissan wouldn't be interested in selling Leafs in Canada.
I'm sure I can just pick a '19 Leaf Plus off the lot here in the Nor Cal at most Leaf-certified Nissan dealers.
Meanwhile 2020 Bolts are available here and pretty cheap in the US (e.g. viewtopic.php?f=10&t=18907&p=576412#p576412
The price increase on the 2020 Leafs vs. '19 is absurd.