The Dumas on Dumas

Me: What is the address of your emergency?
C: I'm over here.
Me: Where is that? Whats the nearest intersection?
C: Over west of Dumas. (pronounced Dew-moss)
Me: I need to know where you are, so I can send you some help.
C: I'm over here. 
Me: Sir, there is a lot of stuff west of Dumas, so I'm going to need you to narrow that down for me.
C: Damnnit! Its Off Dumas!
Me: Sir, I really need you to help me out here...
C: Well you go down that street for a little bit, then you turn left and you go a little ways. Then its right here.
{This went on for several minutes.....}