Who called from 8574445666

Yes two calls today on my cell phone about 2 hours apart.

I've received several calls from this number for the past two weeks, about every 3 days or so and sometimes twice a day.  When I don't answer there's no message and when I do there's dead air and then a hangup

They called twice and no message!

getting on my last nerve

Calling here too, when I answer there is nothing. Yes, very irritating, though I wonder if it is one of those computers at a telemarketer calling us. That would explain why no one speaks. Don't like the interruption, anyway.