Texts and gore from 3 separate numbers harassing my girlfriend

For the past day or two my girlfriend has been receiving threatening texts and calls (that she hasn’t picked up) from 3 numbers who are also sending her gore and videos like a guy with a gun threatening to blow her brains out. As far as I know none of the videos seem to refer to her by name or anything but apparently the texts have referred to her by name. She deleted all of them and blocked the numbers and is changing her phone number because of it, and she deleted her social medias. She gave me one of the numbers but obviously it doesn’t really trace back to a person because they are probably spoofed. Cops apparently didn’t do anything to help. What to do?