Thanks for the advice. I think that the problem is more serious than just contacting the Maps support forum. Spammers somehow manage to create a POI and immediately become the owner.
I can mark them as spam, but I don’t know what to do with real POIs that have been stolen. And since these cases happen all the time, I decided to write about it here.
There is also the possibility to involve the Google My Business support, but I hope @DeniGu or one of her colleagues will step in and help you with this.
The team confirmed the correct details of the places you listed in your post and took actions to remove any non-existent and fraudulent locations. Thank you once again for reporting what you found!