Kind of reminds me of the phone conversation between John Travolta and the drug dealer in Pulp Fiction, when he's driving with Uma Thurman O.D.'d in the passenger seat:
LANCE
She ain't my !@#$in' problem, you
!@#$ed her up, you deal with it --
wait, are you talkin' to me on a cellular
phone?
VINCENT
Sorry.
LANCE
I don't know you--who is this,
don't come here, I'm hangin' up.
VINCENT
Too late, I'm already here.