I've been getting these call for several years.
This what I've found to be pretty effective.
I made a list of spam callers phone numbers and when one of them call, I answer with
AN INDIAN ACCENT AND SAY HELLO, HELLO, HELLO, AND I DO NOT IN GAGE IN CONVERSATION WITH THEM. This drives them crazy and they hang up.
Mission accomplished! Then they put me on their DO NOT CALL LIST. !!!! I win.  

Now, those call have dropped off a lot.
It works for me, Try it You'll like the results.
9/6/13

Second call in two weeks - I did not answer -  from other reports a scammer or telemarketer

Just received a call from this # only thing that came up on my caller id was the number.My answering machine picked up no message left.Endless calls from so many scammers when will it end.

Name: Asia Pacific from Erie County NY. near where I live so I thought nothing was strange except it said Asia Pacific and thought it was weird so I looked it up. I thought it was just a friend of one of my uncles.lol

On DNC list, they keep calling leaves no message

missed/no message. 2 calls in one hour. 12 pages on 800 notes in less than a week must be some kind of record.

Unfortunately, scammers don't care one wit about the DNC list or the fTC

Mine just said Niagara Falls, NY on the caller ID. No message

REceived call from 716-990-8492.When I called back it said no longer in service. I'm on a DO NOT Call List. Why do these lists not work? And how can we bloc robo calls?

Received two calls from 716-990-8492 the last two days.  First one said Niagara Falls, NY the second said 7169908492 as the caller.  We did not answer and they left no message.

These people just keep changing their numbers and  call, and call, and call.
ATT uverse offers blocking of 20 calls and my Panasonic phone will block 20!  40 numbers is nowhere near enough to block these people!

The same number has called three times today. I am on a do not call list.

Caller hung up just as soon as I picked it up.I don't know anyone in Niagra Falls.
caller id SHOWED UNKNOWN CALLER.

Just got a call - only the number showed on caller ID.

we continue to get calls several times a day from this number.   No one is ever there when you answer.  If you call back the message says" this quicket 3 is no longer in service".  However, this is the # used every time.  We haven't requested a call and we are on the "do not call list".

This Mary chick must be a morning scumbag. Called me at 9:36 this morning. Too bad she can't experience a slip and fall!

I got two calls from this number today . I've never had that number on my caller i.d. before. I figured whoever was making the call is up to no good.

I  this call from 716-990-8492. when my answering machine picks up they hold the line just long enough, that I have to go to my answering machine to shut it off.
If the call isn't important enough to reply to my answering machine then it can't be IMPORTANT!!!
Why can't these people get a life and stop pestering others?
I'm so tired of these calls. Why can't they be stopped some way?
It just says unknown name.

If enough people report this number as a unwanted call they will get caught. Mortgage Inv. Of Fla were caught and fined 5 million. Call them at 800-270-2528 and tell them they got what they deserved.

Caller I.   D. just shows out of area and telephone number. No message left. Have repeat calls from this number which I do not answer.

Just got a second robocall in a row but from a different 'spoofed' phone number 716-990-8492 caller ID said "Unknown Name" on Wednesday 8-14-13 @ 1104 AM
after getting robocall from 612-225-5373 caller ID said "Unknown Name" on Wednesday 8-14-13 @ 1037 AM

Another "Medical Alert system scam like I have fallen and can't get up" press 1 to talk to a Representative or 5 if U do not want us to call again. Pressed 1 and the message started up again and then got disconnected.

The SCAMMERS just called from a different "spoofed phone number" to try to 'Retaliate on me'
because  I SCAMMED the 1037AM call full blast with a "YouTube Cussing RANT"

just had this no# ring up twice- they hang up after two rings and  call back again--I have caller id so just to see  I dialed it back and got the no is no longer in service is there  something  legally that can be done about  these calls?

My mother has been getting calls from this number listed as unknown caller.  I did the look up and
got this site.

This number has call me 4 times this morning, a half and hour apart, the name shows up as Niagara falls NY. Idk no one there. I picked up the phone and said hello and no one answered, I said if ur not going to say nothing then stop calling my phone

They called yesterday. I called back and it was for an auto warranty. So I did what they do and hung  on them. They called again today so I called back and got a message stating the cricket number is no longer in service.

I keep receiving these calls by posting to this site will these call stop?

I've received calls from this "senior...fall and can't get up" representative regularly (sometimes daily) for months.  Today, I received two calls before 10:15 am.  When I pressed '1' to speak with their representative (John), I asked to be removed from their list........and was hung up on.  My patience is growing quite thin with these types of annoyances.  When I tried to redial....was told this "Cricket" number is no longer in service.  Please help.

Received a call from this number... when picked up.. they hung up...  I redialed the number since it was from a "Cell" number...  It said the phone number is no longer in service!!!!

Strange, I did not get these robo calls until I signed a petion on line for AARP!

I have never joined AARP and have nothing to do with their high priced services. Within a few hours I started getting robo-calls concerning senior protection etc. I am convinced that AARP sells information/lists. If you do not give your phone number they can find it with your name. So if you do not wish to recieve these calls - stay away from anything to do with AARP!

Received Robo-call. When I called the number back to request removal from calling list it said that the number was no longer available. Caller ID said cell phone. I did not listen to message as it started "Do you know that thousands of senior citizens........"