Who called from 2135275233

Received two calls; did not answer. Caller left no message.

Called my cell during a meeting. I don't give out that number.  Didn't respond when I answered.

I got a missed call and no message. When I called back 4 min. later the number was disconnected.

Received a call but did not answer. No voicemail left. Called 5 min. later and Verizon phone was disconnected.

This number called me on 4/20/2015 - I called it back on *67 and got a recording that indicates the number is not in service - some kind of scam I suppose