Dial 911. Make a cop come.
I feel compelled, yet again, to beseech all of y'all to help remind our fellow citizens that, if your concern is worth waking up an off-duty officer whom you don't know at his house, then it's worth dialing 911 to summon an officer to your location. By way of illustration, I give you the following interaction, which has occurred at some point in the fairly recent past:
Stranger woman: [Banging on the door] Hello?
Me: [Sleepily answering the door] Do wha? Huh? Whaza? How kin ah he'p you?
SW: I saw the police car parked out front. Are you a police man?
Me: Uh huh. Whaza... What's going on?
SW: Well, I was at the park, and these dogs attacked me, and, and I feel silly not having called before-- this is the third time this has happened.
Me: Uh, did you call 911? [Gesturing to her iPhone in her hand.]
SW: Well, no, I didn't know the number to the police department. So I went to the police department, and no one was there, and...
Me: Why not call 911?
SW: Well, I just didn't think it would be that important....
Me: Ma'am, I can assure you that there is nothing more important than the safety of our citizens. If you're attacked, please call 911 immediately. As it's now passed, please call the non-emergency number (posted on the door to the police department) to make a report to the on-duty officer.
SW: But I didn't think it would be important enough to call 911 about.
Me: But you felt it was important enough to wake up a sleeping off-duty cop to report it, even after the fact, at his house...?
SW: Well, I hadn't thought about that.
Me: [Yawning.] Lemme give you that non-emergency number.