Just wondering if I missed anything in my response to some sketchy calls I started getting last night.
I received a text a little after midnight. It has several misspellings and some words are repeated multiple times, but it basically reads "we are here to tell you that if we don't hear from you soon you will have yourself to blame."
I then started receiving about one call an hour (two of them were within 5 minutes of each other, the rest were spaced out by about an hour) from this number. The calls stopped around 8:30 am.
I didn't reply to the text and have not answered any of the calls.
The calls are from a 12-digit phone number that doesn't seem to match any international code (making me suspect it's some routing method?).

My cell phone carrier (att) can't block the number from my phone because I have a really old flip phone (Luddite, what can I say). The told me to make a police report.
My state police were basically like "there isn't much we can do, you can file a formal report if you want." I haven't done that, because the calls have stopped.

At this point if they start up again my plan will be to change my number (and probably, reluctantly, upgrade my phone while I'm at it...id been putting it off).

Is there anything else I should do? I was really freaked out last night, but now I'm just kind of annoyed and assuming it's some attempt at a scam?