The same thing is happening to me. I've received three calls from this number, and every time I answer, the line goes dead. When I try to call back, a machine tells me the number has been disconnected. I don't know how to get them to stop calling.
I have received four calls from this number today and it is only 4p.m. I do not answer any number I don't know that is why I have voice mail so they can leave a message. So far they hang up. After reading these posts, I definitely know not to even bother calling them back.
These people call before 7am and after 9pm wth I'm on do not call list, and still get calls from this company whoever they are, take note, I have caller ID and an answering machine if I don't know you, or your number you go straight to ans. machine and then to hell!!!!