wake up alarmed

two in the morning & I woke up to repeated doorbell ringing & door knocking. its 2am! & this is very odd... a night or so ago I was woken by a drunk man yelling, silent, yelling, cops, yelling so it just left me unsettled so tonight it just scared me. it's summer I was sleeping with my window open so I slowly emerged from bed shutting it silently as possible, locking it & lower the blind. I didn't want someone trying to het in for whatever reason to see it as a contact or access point. I then slowly opened my door after grabbing my phone thinking maybe just a drunk neighbor cause anyone I know would call me right? but who would, my roommate is home. I peek in the kitchen where we have uncovered Windows & slowly creep to the front door looking back to lovely French doors to the backyard incase a full sized person was peering in from there, nothing. still nothing by the time I made it to the front window & peeked out scanning the front. I game back to bed bit it was just weird, it went on for so long, why? & how did it end? my heart was thumping a bit I'm my chest but I had my phone... how was I going to use that for protection anyways? throw it? calling in an emergency doesn't do much good if someone is there to hurt you betore response time... then again I doubt someone there to cause real harm would ring ring ring, knock pound knock, & repeat for as long as this was happening. well its been quiet for the last half hour maybe I can open my window again, besides if someone really wants our attention my roommate's window would be the first they find going around the house & through the house, unless they like to brave q giant rose bush.