Interesting idea, for me the connection job without any map or knowledge was a bit confusing. But I tried 3 times and on the 3rd playthrough it clicked that the people asking drop some hints and from there I figured it out.
I loved the story, I missed some details, or anything about the protagonist. Also it got a bit boring after you had to connect 3 callers for the third time. But even than you did make something unique and enjoyable, congrats!