Different scam from this number now. Claiming to be from my cell carrier, but another link lists Onvoy and Aurora, Colorado as the carrier (I don't live there). RoboVall asks me to call back an 866-area code number and input a 10-digit reference number that happens to be my cell number. Seems like a scam. Not calling.
Caller asked if this what "First Name, Last Name". I stated yes. He asked if I still received mail at "My street address". I asked who it was calling. He asked if I still receive mail at my street address. I told him that I wasn't going to answer any questions until he identified himself and he hung up.