Who called from 8180000000

Just received the call on my work number. Asked for my name and hung up!

Caller: Hello can I speak to Stephen?
Me: This is him, may I ask who is calling?
Me: Hello? ... Hello?  

Oh look, they hung up...

Same thing just happened to me. A guy says, "Hi can I speak to [my first name], please?"

I said, yes this is her. And they hung up immediately.

WTF.

Just got a call to an OTTAWA, Ont. number -- I did not answer because the ;number was a strange number - I'd like to get a hold of the head of this company and bug him as his people are doing to us.

They called me on my cell phone.  When I saw all zeros, I felt it was bogus anyway.  I don't answer calls like this.  She left a message and her name was Regina and that she was my mortgage servicer.  If that is true then why didn't she leave her company's name?  If this is Bank of America (stated by other posts), then why all the secrecy and blocked numbers?  I will wait and see what happens next time.