Who called from 2139925916

Either rings one time. I call back and do not get a human being and told they will call me back tomorrow. Leave your number.Un

I received a call from B2B this morning. They did not leave a message so it could not have been too important. My number is on the do not call list so they are in vilation of the law since I have not done business with them.

call then hang up after I don't answer

Pretty sophisticated automated voice system trying to see if I would put some type of wifi system in my home in exchange for placing a sign in my yard.  Blocked.

Same
I blocked them