Hey There.
I actually see something different than you but I'm searching from the Toronto area which is 3-4 hours from Kingston. I actually see this which shows the duplicate Miriam mentioned as ranking 4th and the listing you showed is actually filtered because it's using the exact same phone # and address.
Having this duplicate is doing you a huge injustice because it's not linking to the website that is ranking high organically like you mentioned and it's splitting their reviews which just results in 2 profiles not ranking as well as they would if all the reviews were on 1 listing. Plus, since it's a violation of Google's guidelines, one of them could get removed and then you would lose the reviews on it.
I'd suggest consolidating them. This duplicate is verified so if you don't know who created it, you'll need to get access to the listing first. The naming convention it's using on the listing is also a violation of the guidelines.
The listing that ranks 2nd is doing some serious keyword stuffing so I would suggest you level the playing field by editing the listing and removing the keywords.
The listing that ranks 3rd and is above you should also look into as the name is keyword-stuffed, she already has another listing with her name, and the address she used on this listing actually belongs to a Re/Max agent as seen here and in Street View.
As for your 2nd question, it's hard to offer suggestions without knowing specifics 