The following URL links to the FTC FAQ page which the DNC site *twice* coaxed you to read before you registered your numbers. See items 28 through 32 in particular.

It's likely the calls are placed by a commercial fundraiser, such as Associated Community Services, Dial America, Harris, InfoCision, MDS, and TeleFund. Commercial fundraisers sneak in as Do-Not-Call exemptions but do not share the same protection as their clients. The FTC rules say: ''... if a third-party telemarketer is calling on behalf of a charity, a consumer may ask not to receive any more calls from, or on behalf of, that specific charity. If a third-party telemarketer calls again on behalf of that charity, the telemarketer may be subject to a fine of up to $16,000.'' They are also covered to a point by other regulations for telepests, so you can kvetch about abandoned calls, bot calls to mobile phones, and so on.

What else to do? File complaints with the FTC and attorneys general, and the charity group doing the hiring. When the boiler room calls, try getting on a master ''no-call'' list for all of that firm's charity clients. (See more discussion under this number: 901-881-9984 ) If a given commercial fundraiser seems deaf to your demands, and/or merely renews its pestering with the next campaign, turn up your volume on paper. Send a cease-comm notice via USPS Certified with return card. It need not say more than to stop calling and writing whatever numbers and addresses you want protected.

A charity call campaign must usually be cleared through some agency or regulator in your state, and many states make activity reports available online. They often reveal a specified period of weeks or months in which the group is permitted to solicit, sometimes tracking well with the observations on these call forums. Find those reports and you'll find one more desk to advise of your displeasure.
 Sep 25th, 2011
Sick sick sick of these calls,weekdays,weekends,day night,anytime they feel like it;these automated calls have got to stop!!! isn't there a way to put an unlisted/non-published number on a list that actually works? I have been on the Do Not Call list but these jerks continue to reach my number-I have had about enough of it.
 Sep 18th, 2011
I have received 3 calls today from these jerks-they never leave a message,if you answer,the call which is automated,says,"there is nothing wrong with your account....."that is when I hang up on them;I am called daily by these & other scammers-I have a Private/Unlisted # plus I had put all my phones(cells) and landline on the "Do Not Call List & I still get these calls...am fed up with them.
Other Numbers are: 407-545-9999,407-480-9999,323-474-0371,206-279-5134.
 Sep 11th, 2011
I called the listened number for National Diabetes Association 1-877-506-9633 and the person that answered said it could be one of their representatives, I asked to be put on a do not call list and she said they would comply. She said they do have represenative with Latin accents and that they are in area code 323!
 Aug 15th, 2011
Caller left no message. I called the number back and got phone co. recording that said " your call cannot be completed as dialed." Why am I not surprised.
Gerald W.
 Aug 07th, 2011
Ype, i got this call as well asking me if I had anyone in the household with diabetes. I asked who were they looking for and caller answered that they are making random calls. I tried calling back but got a busy signal.

It's a scam, if you see this number, don't pick up.
 Aug 01st, 2011
some spanish speaking lady called my cell phone asking for a Darius Cardona.. WRONG.. I told her to bugger off and hung up. Going on my verizon blocked number listings.
as a hole.
 Jul 29th, 2011
They called 2 weeks ago asking if anyone in the house had diabetes and we told them no. They called while we were out yesterday and left no message.
 Jul 23rd, 2011
This # called my cell phone,..no message was left. Thanks to this site, I know now it was a scam call.
 Jul 18th, 2011
Answered the phone. Caller used profanity and hung up.
 Jul 14th, 2011
Answered call, "Hello Mr. I'm calling for the Diabetes Foundation.", based on comments here and this was the third call and the first one answered I ended the call.
 Jul 09th, 2011
Didn't answer! Presumed just another scam caller! When does it ever stop or at least slow down?!?!?!?!
 Jul 07th, 2011
The call came at 1:21 P.M. on 7/2/2011. Caller ID gave a number of 323-474-0371 with California as the caller ID. The number is registered in California as a landline. The female caller with a Hispanic accent asked for Paul. When I said there was no one here by that name she said “ as long as I have you is there anyone in your house diagnosed with diabetes?”. This approach seems to be common among people making calls that they know they shouldn’t make, they think we’re stupid enough to believe it. When I tried to ask who she represented, she hung up.
Tom Lynch
 Jul 02nd, 2011