Who called from 4087963012

No message, when I called it said: "please hold and an agent will be right with you, please leave a message after the beep." then there was a beep.  No idea who these people are.....

My line is listed on the do not call list.

Please take my number off this list, as I am registered with the DNC. Thanks.

they called my cell/I do NOT answer unrecognized phone nos.  They did not leave a message.

I am so tired of getting calls from 408 796 3012 - usually no one answers when I receive the call or it says it  a number that can not answer me at this time