877-210-5921

Received call from this number. Answered, sounded like on hold. Hung up, called number, got recording that said call could not be completed. Don't know who this is.

They've called twice already, never say anything. I've read on other boards that the caller is something called 'pain management'. They ask if you're in pain, then cajole you to make an appointment. They also seem to know if you've been to a hospital recently, or had an accident. Neither of this applies to me, however.

I got a call from this number and when I answered I was hung up on

Hung up on me, have not left messages.  Who are you?

I also have received this and other call from '800 service'. the do not call list does no good.  most of the call have come from 877 330 0743 - wells fargo insurance.  Calling them did no good