I keep getting the same thing and I called at&t and they said there was no recorded record of them calling me. They never leave messages but also when I call back there is either a busy signal or a disconnect recording. I was told there is an app on cell phones that allow them to use a bogus number. I believe that's whats going on because even my cell phone bill doesn't show the calls! URG

Many calls, no message, returning the call you get a message that says it is an unavailable number.

I've been getting repeated phone calls from this number too.  No messages and when I call back the number doesn't exist.

Several Calls, no messages.

repeated calls from this number, seven calls in two days,but if you answer no one is there. STOP

Five calls to my cellphone in the last two days.  They never leave messages.  Very annoying.

They called me again. This time they left a message about 45 seconds long but it was blank. How annoying!

Hey have called me about 5 times in the past 2 days and I have not answered any of them except for one. The last one (which happened about 1 min. ago) I did pick up and a girl answered "hello" and I hung up :) they do not leave messages... I hope they don't call again.

These people keep calling, when I try to reverse phone look up or return the call on my cell I get a message that the number does not exist.

This number keeps calling me 2x or more a day, there is no one on the other end they do not leave a message

I receive one to two calls a day from this number with no answer on the other end.  If I do not answer in time, they do not leave a message.  I am blocking this number on my phone.

I got a call yesterday afternoon, said they were doing a survey so I hung up. They called again today and I answered before looking at the number and it was a recording saying I was the only person on the conference call. I hung up again.