How do you block these?

It just act as if it is a message graham.  I tried it from another number.. it said it wasn't registered so it couldn't give me the message.  I just deleted it from my phone.

NO MESSAGE!

Rang twice and disconnected (caller hangup?)
28Apr2010 @1:31PM EDT

Got a call from this number, rang once, no msg left.

THEY CALLED ME AT MY CELL PHONE. LEFT NO MESSAGE. I CALLED BACK AND GOT A WEIRD AUTOMATED MESSAGE. I HUNG UP. TO ME, THIS KIND OF A VERY STRANGE SCAM.

This phone number is for a company called Heycosmo...here is their website.

http://www.heycosmo.com/aboutus/contactus.php

Sounds like if you got a phone call from them, it may have really been someone else that wanted to contact you and they used heycosmo to try and get ahold of you.

Check out the website

You can contact the Federal Government and file a complaint like I did at the following government website:

http://esupport.fcc.gov/complaints.htm

Steve

Got a single ring on saturday...no message

I called the number and it was sprint the phone company called but I just hung up after I heard who it was

Called and hung up after one ring.

I received a call from them Sunday morn at 11:24.  My phone was on vibrate, it still rang once!  I have Verizon.

We are on National Do Not Call list.  Do not call this number again.

Just got called. One ring and hung up.

one ring no answer

Got a call on my cell.....am registered on the donotcall, too.  I blocked their # so it will be the only time they get thru.

just one ring, no msg too

Got a call from this number 909-200-4509.

Blabbed something about "Hey. To hear your message from Cosmo.  Press 1"  Then it hung up.  This happened at about 4am.

Some people above are saying it is "Hate Cosmo"  That is wrong.  It is "Hey Cosmo."

The company that runs HeyCosmo.com is called Arsenal Interactive, Inc. (650) 282-2900.  But don't expect them to answer.  They appear to be unreachable.

http://www.heycosmo.com/aboutus/contactus.php

Rang, I answered, and heard just a dial tone...on my cellphone. I've never heard a dial tone on a cellphone before...this could be aliens.

Cell rang once.

I got a call from 909- 200-4509 and call them back speding 7 seconds.  Please help to stop them.

I got a call from 909- 200-4509 and call them back speding 7 seconds.  Please help to stop them.
My phone number is 224 595-1972

Thank you,
Vladimir

1 Ring. No VM.

Received call on cell phone, one ring then hung up.  Left no message.  Did not return call.  Also listed on the National Do Not Call list

These guys are being hired by the telcos to call cell phones to burn minutes.

Called my cell phone. Rang once and hung up. Did not leave a message.

it happened at 8:39 this morning

partial ring and hung up...googled it.....my phone has been acting up ...just shuts off for no reason...im with verizon...formally alltel....wonder if there is a connection????

One partial ring and then hanging up.

6:47 got 2 ringer and hung up