Whoever or whatever this caller is, they use several numbers and have Caller ID that always says "ALARM CO." Fortunately, my online call-blocking service already had this number and the others already blocked. Hallelujah to that service.
Also, that call today was a first, and the other numbers they use are these:
316-453-7382
323-326-4118
629-222-1989
651-666-1995
702-299-6108
737-300-6324