I get these calls also. I doubt it has anything to do with any communication services anywhere.
My calls always come up as "unknown name" or "unknown name and unknown number". I ignore them.
With all the cr@5 my phone company requires me to pay for {kinda like cable does} that I DON'T use;
I am glad that there is one service that I do find useful- "caller i.d.".

too many times, when answered, just silence on the other end.

they call two or three times a day, never say anything. finally I called them back and they said it was att with an exciting offer, id not feel it and hung up. is this legal it borders on harrassment to me, may have to see about how legal this is.

Do not Call

I have received those calls everyday day, sometime 2x a day -I am angry - the number that constantly is calling - 1-888-926-5100 - THE SOLUTION IS FREE OF CHARGE - After they call again do not pick up, wait until the call stops and immediately pick up the phone and press *60 - listen to the instructions and then press #01# - That should put them on the black list - you will block this number for ever. I hope this work.
Good day and Good Luck :)

got two calls today from them!!!!!

no message.  just repeated calls starting at 8 a.m. to 9 p.m. at night.  i don't know the number and i won't answer it.  as soon as my machine comes on the 'caller' hangs up.  i'm on a NO CALL list also and this same number also calls my cell phone. Both my home number and cell phone number are also silent/unlisted numbers.  No one should ever call it except people I know.  I'm sure it's a scam.

Several calls from this number.  Sometimes seems to be an AT&T telemarketer and sometimes seems to be from someplace else.  Suspect this is a phishing expedition for more than one telemarketing company.

yes i get this call twice of three times a day same thing just hangs up when answered

Stop calling and then hanging up.  What the H**L do you want? Not interested, so stop calling.

Go to the Fedrarl Trade Commission website and file a complaint.  I have gotten rid of several idiots by doing this and it doesn't cost anything.

no message.

ATnT , are losing customers, they trying to do everything they can to get people back, poor little ATnT.

Scam.  Rude people.

I'm getting rather bored with the calls like this it's people like this that make some people go on shooting sprees he he

they call once or twice a day. everyday. nothing left on voicemail. i dont answer

https://complaints.donotcall.gov  Alot of good that website does they seem to like to call more
I think the Government is giving or selling the numbers to one another since they like tapping into your phones line like the perverts that they are

I have been getting a call from this number every night AT WORK.  My extension is on an internal network, not published outside of the factory.  They need to stop calling, this is very distracting.

Tired of these b***s*** calls Hide your name I say f*** you

Go to  www.TCIM.com and fill out there phone removal PLUS LET THEM KNOW you are giving them a cease and decease ORDER and giving them the legal amount of 72 hrs to stop or you will take legal action and MAKE SURE YOU KEEP A COPY of it and make sure they know your keeping a copy for legal purpose's

received a call from 888-925-5100 tonight 8:45 and no one answered...  who is this.....
why are they calling.    trying to see if someone is home or or a number that cost me when I pick up my pnone??????

This number calls daily. I finally started answering - as soon as I answer - the phone line disconnects. Nothing is ever said on the other end of the line.

I get a call from this number every day more than once and at all times of the day...they have no respect for the time and when I answer it automatically hangs up/disconnects...if I dont answer it leaves a long message on voicemail that makes absolutely no sense....I called the number back and it says it is a call from TCIM on behalf of ATT but I dont have ATTand I dont want ATT and I have told somebody from a different before I wasnt interested so why I keep getting these calls I dont know but calls at 2-3-4-5 am have got to stop!

This number cannot be blocked by my phone service provider.  I called it and found it's an A T & T marketing robo call.  It did allow me to get on their "do not call" list.  I hope it works.  This robo call has been persistant.  Also vote for anyone who will pass legislation to stop these untraceable robo calls no mater who they are from.

"This is <some call center agent> calling on behalf of AT&T..."

Doesn't matter how many times you tell them no and to stop. The calls never will stop.
We've had dozens of these calls.

Why do these people call?

called by this number no message is left.

i keep getting a call from 888-926-5100 no message is left

We are a place of business and get numerous calls from this number daily.  It is very disruptive and irritating.

i get theses calls every day about atnt i dont want it and they call back get the hint and bother someone else they are a pain in the butt