My teenage son keeps getting calls from this number. He has an iPhone 4s, how can I block the number?

I missed a call from this number, but it showed 11 in front of it.  This is the international call number for the USA.  I figured it was a scam.  

got a call from these people wanting to lower my intrest rate....i dont have a cc

Call my phone leave no message.  You are now blocked.

Scam Artists - Have names, addresses, phone numbers, license plates, email addresses and photos of everyone working at this dump.  Will be releasing to the public on all social media channels.  Will also be releasing docs on the books they are cooking. They shouldn't have called me.

this happened while at work, very annoyed!

I get calls like this all the time from scammers and looked this one up to be sure it was another. Looks like it is and interestingly enough I just applied for a kohl's card like another poster mentioned before me.

THIS NUMBER KEEPS CALLING MY PHONE AND WHEN I FINALLY DIALED #1 TO REACH A SERVICE REP, WHEN I ASK TO BE REMOVED FROM THEIR CALL LIST, I HAVE NEVER BEEN TALKED TOO AS DIRTY AND AS RUDE AS I JUST WAS, I DON'T EVEN KNOW WHO TO TALK TO AT THIS POINT

It called me on.my cell phone while eating out I have my number for a long time this is the first time I got a scam call it was from New Jersey I didn't know any on  from New jersey

Keeps calling my cell phone and does not leave a message.

Received call from this number, was a recorded call wanting me to update information on credit card. Scammers!

just received a call from this #-they left no vm did not answer bc did not recognize #...

Another one of the spoofed numbers used by the "card services" scammers in their attempts to rip us off. Google my name to learn how to stop their annoying calls, while also having some fun!

this phone number keep calling me 609-624-5213

This number called my cell, I did not pick up. Looks like I was wise not to.

I got a call from this number. She said her name was Liz, and asked me if I was carrying any balances on a visa Mastercard or discover. I said no and that I didn't want any calls from them anymore. She hung up on me. So I called back. The number has been disconnected. I muse point out the lady sounded foreign, I think it's a over seas scam. And wonder if they got my info from Target.

Called me to state I'm eligible for a lower interest rate that is higher than my current credit card company; which I happen to work for.  Stayed to speak to a rep who hang up on me

I  got a call and a record voice mail from  609-624-5231 on  1/11/2014 some kind a scam,  I am on the national do not call list please stop calling me thank you,

I got a call from 609-624-5231 on 1/11/2014. It was a record message left, some kind of scam or telemarketing company,. I am on the national do not call list please stop calling me. Thank You

receive calls multiple times from this number.  since I don't recognize it I never answer.

Received calls from this number twice...only 2 minutes apart. Tempted to answer but when I saw the exchange and they didn't leave a message, felt it couldn't be that important. They called my cell phone and like so many others it's irritating.
Thank you for having a place like this to track the number of individuals being called and what kind of company it is. Hope everyone has a great day!

Keep getting calls on my cell from this number.  They never leave a message.  HELP!!!!!!!!!!!!!

These nuts have called my cell phone at least 4 times. I don't answer it when I am driving. I also don't talk on it much. This is my emergency phone. I am tired of these scammers calling. Thanks folks for the info on who is calling.

Same bull stuff different number. I'm sure they just changed their number and are starting all over again.  I just let it ring until they give up.  I don't turn on my answering machine.

I noticed all of these comments are after the Target breech, did any of you use your card at target during the breech?

Got a call from this number just a few minutes ago, I picked up the phone but no one answered.

Did not pick up.  No message left

Keep getting unwanted calls from 609-624-5231 and no idea as to who it is. have reported it.

The card service scammers   WILL   "service" our credit cards,   BUT, when they finish "servicing" them, they will have no available credit remaining!

Who is calling without leaving message?