Perhaps Crowley didn't hear the 911 call and assumed it was about the two African-American men he encountered once he went up to the door.
It's not unusual for this kind of discrepency to come out in a report when you have multiple people reporting and different reporting instruments.
That's one of the purposes of a police report-- weed out the inconsistencies in an arrest or other incident.
*****
We'll be friends until we're old and senile. Then we'll be new friends.
-Anon.