Being Harassed And Stalked By A Former Acquaintance - What Are My Options?

(New York)
I'm seeking some legal advice about a situation that's been escalating and is causing me a lot of stress.
I'm a 23 year old female, and about 2-3 months ago, a male (24) joined my friend group. He had an issue with me early on. I'm typically quiet and reserved, and this really bothered him for some reason.
Since I spoke to him very little (as I had no interest in friendship ) he started using texts as a means to intimidate me into…befriending him? Dating him?
I shared these texts with my friends who started icing him out of the group. They told him clearly to leave me alone & he was uninvited from a friend’s housewarming party. I blocked him as well.
He started texting me from another number. My friends and I decided not to make a big deal out of it (upon my request), hoping he'd lose interest if we collectively ignored him. However he started harassing them via text, especially my girlfriends, trying to ‘win them over’ I guess (?) so they could help him get closer to me.
The harassment includes him leaving countless voicemails and texting me from morning til night. I posted some of these texts on the texts subreddit to give you an example of what I’m dealing with.
Recently it got even worse. Over the last few days he’s been loitering outside my home and knocking on my door repeatedly. Today he left a “gift” on my window with a note attached
I’ve documented everything and got it all on a folder. I’ve actually went to the police twice and they said they can’t do much right now and to let family and friends know about my schedule and whereabouts.
ANY legal/advice on what my next steps should be? I feel like I’m being told to sit around and wait for something to happen.
Thank you in advance for your help.
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