Called late in the evening. Left no message

I just received a call from this number. Caller i.d. says home security.

Got a call from 6093579015 on 10/7/16 and whoever it is left no voicemail

Called cell # no message

Got 20 calls from this number, and 4 others, spanning 5 states, across 3 days.  All of them were the same Security company, the same person.  I threatened to call the police for harassment, and report them to the BBB, next time they call.