Who called from 2139153175

3 times in 3 hours trying to sleep.

This number, (213) 915-3175, starts calling me at 8:30 am and calls me up to 8 times until around 8:00 pm. this person sometimes leaves a "message", which is silence until the message goes off. The only reason this person would do that would be to leave his number on my phone. They have the crazy notion that I would call them back and thus defeat the "No Call" restriction. My phone also has a voice identifier, which says who is calling, so when I hear it telling me, "California Call" and not one of my friends names, I just ignore it.
I don't know what they are selling, but if I was in desperate need of their product, I wouldn't buy it from them.

picked up phone, no answer, said hello 3 times and then they/it hung up.
called back but the number doesnt go through.

answer and no one speaks. very annoying. i guess "do not call" registry
listing "does not work"

Tired of these calls will report to FTC