Loud music at 2 am literally vibrates my apartment walls

Hi, I recently moved to Denton in mid-August. I go to UNT and live a pretty short walk, about 15 minutes, from the Union. My apartment community is pretty quiet, and I had no complaints at first. However, after a couple of weeks of being moved in, I started hearing very loud music every single night, and very well into late hours, like 1 or 2 am. I’m not kidding when I say it’s so loud that it vibrates my apartment walls. I’ve complained to the apartment complex owners multiple times, and even a couple times, went to go investigate where the sound was coming from myself so I could confront them. However, I couldn’t find exactly where it was coming from. I can’t tell if it’s coming from the complex I live in, or the completely different apartment building in a different complex just a few feet away from mine.

I know I’m not imagining it either, because my girlfriend notices it too when she’s in my apartment.

I’m becoming really miserable. It’s literally every single night. And along with my studying being interrupted by this issue, I have insomnia and sleeping is already difficult without this. I’m not sure what to do anymore. I’m also neurodivergent and I have sensory processing disorder and things like this make my life so miserable. I really need some advice because this is making living in my own home really uncomfortable. Do I call the police at night while it’s happening? Do I attempt to confront the person myself again? I appreciate you for reading this far. Thank you.

UPDATE: Thank you all for your help and advice. Over this past week, I have called the non emergency line 3 times. They say that they come out to take a look. The music stops temporarily, and then it comes right back on the next day. I’ve given up and resorted to just using my headphones. While it doesn’t stop me from literally feeling the vibrations in my head from the loud bass, it at least blocks out the music itself. It’s really frustrating, especially right now while I’m studying for finals and finishing up last projects, but I’m not sure what to do anymore. This is my first time living in an apartment complex and I may just have to get over it. Again, thank y’all for the advice 🩷