Yipes.  Shades of the Kim family.
I was in Boston one time, and my rental car had a GPS unit.  It had an utter fit, lol, when I went into one of the underwater tunnels.  "[alert noise!]  You are off route.  Return to route.  [alert noise!] You are off route.  Return to route.  [alert noise!] You are off route.  Return to route...".  I finally turned it off and used my AAA map.  lol.
Another time I was in Miami.  I was directed to a smilarly named street (to the one I was looking for) in the 
wrong part of town.  Really wrong.  Like scary people staring at you from the front porch following your every move like a predator.  Again, I pulled out my AAA map.  "Oh, duh, I'm down by the docks.  I need to be closer to downtown on this street here."  Based on the map, I drove to the nice part of town and pulled safely in to a shiny Marriot.  phew!  ALWAYS CARRY A MAP (like I need to tell you guys that).  And, um check the map as you go.  

  Lesson learned.