Just called here. They called me the other day with the same message, "AT&T, you just earned $300 off your monthly bill..." then asked I visit a given webpage for more information.
1) I don't have an AT&T account.
2) I don't visit unsolicited webpages.

I hung up.

Told them not to call again.  We'll see what happens.

SPAM calls many times per day.  Mark the number as spam or blacklist it with an app or with your service provider.

1st they called my cell phone. Told them to put me on the DO NOT CALL LIST and hung up...2nd and beyond called my home number told them,"to put this number on the DO NOT CALL LIST and hung up". They now call and when I answer the phone they hang up...thought it was against the law for them to call back if this is stated to the caller...or am I not knowing the protection or law ?

I keep getting calls from 800-238-3770 day in and day out!  I've called them 4 times to remove my number from their list and their still calling me.  I'm on the DO NOT CALL list and that isn't work what so ever and I'm sick of it!

  On 3/22/2013 I got a call from 800-238-3770, and I just had the phone connected yesterday.  Any way, I did not answer because I never answer unless I know who is calling; also, I do not give my number out because I pay the bill for MY convenience, not their's.  
  Back to this number.  They did not leave a message.  I ran the number in Google, comes back to ADT Security Services.  They deal in home security, and apparently work in various areas at certain times.  But I have seen other callers say something about Social Security Disability - Do not know if they have expanded in to that area or not.  
  Bottom line is as long as there is some people that answer answer the phone, then they have a chance at making a dollar.  When we stop answering everyone's calls, they will stop calling because it will not be profitable for them.  It is your choice

Please do not call, my number is 215-492-5297

Called three time within five minutes,

Multiple calls at all hours of the day; no message left

This number calls my house about 4-6 times a day.  I have asked them to stop calling, but they still do.

i keep getting calls from thus number and they dont ansewer i put the on th do not call list but itis not weworking so why bother with the do not call list if it doesn't work

why do i pit my number ion the do not call list it son't wor k

They just called on a freaking Saturday morning. A***oles

They call several times every day. That is WAY above and beyond what is appropriate even for telemarketers.

I keep getting calls on my cell phone which are eating up my minutes!  Please stop

Got this call at 6:07 p.m. on February 21, 2012.  No message left.  It is a call from ADT.

If you have Comcast just dial *60 it will tell you directions from there. *60 is a way to block numbers from calling you. You can have up to 12 on this list.

This number kept calling repeatedly & never left a message. I don't pick up numbers I do not know especially if they are incapable of leaving a message.

Same here   thats   what i did i  requested info   about ADT   and poof now  gettin calls  and  saying  nothing  this is  b/s

This  number  called  me  2xs  when i  answered  both times  NO repsonse  wat s o  ever

I did not enter our # on ADT's website but somehow it had it.
Followed your information and Ms Shannon at ADT has put my # in her do not call list.
She said it might take about 72 hours to be effective.

Thanks again for the information.

The call came in at 5:30 p.m. my local time today.Leaving no message. I don't pick up phone calls I don't recognized. Because, this happen in the month of November and December when you had a deadline of December 7 of 2011 to get a healthcare plan. And tons of calls came into calling my number leaving no messages. But, looking them up on the computer finding out the were healthcare providers.

keeps calling, ask them to put me on do not call list, and they still call. not even asking for anyone that lives at my house. asking for donald stacy.

I get frequent calls from this number. Don't know who it is.

Just got a call and they asked about insurance!!!!!! wtf

ADT® Home Security
$35.99 ADT® Monitoring Special! Installation Special. ADT Aut

Will not remove your name from no call list. Very pushey people,putting older generation under a lot of pressure. BAD BUSSINNESS PRATICE

I requested information from ADT Security. This was the follow-up call.

they called and left message on answering machine but did not identify themselves.

This is ADT.  I requested a call back from their website and this is the number they called me from.

After incessant calls from this number I called it to stop the repeat calls with no message left. It is indeed ADT. I noted I was on the Do Not Call registry, and after providing my phone number I was told I'd be taken off the list within 24 hours. I would never do business with such a company that violates the law so brazenly.

They called me twice, they didn't leave a message. I didn't answer..