Only to the ignorant who have no idea why it was created and it's one sole purpose. Go to the site and read......learn.

The DNC doesn't handle criminal scammers. Its not law enforcement.   Criminals, like card services,  are the job of FBI, FCC,  etc.

Put the blame where it really lay's, with the criminals and illegal telemarketers.
The DNC works just fine. It is for telemarketers only and honest business does indeed abide by it. It is the criminals (which includes illegal telemarketers), frauds and scammers that do not. However, the Fed. DNC does not cover some survey's, Political or Charities.  You would need to check your states DNC laws to see if these are under your states DNC laws.  The fact remains that they are not automatic call blockers though and can not protect you from the calls that are criminal, illegal or fraudulent.

Do consider getting a call blocking device or phone..  You can google them and many are around $40.00 or so.If its a cell phone, some already have call blocking, if not, there are free apps on the web that will work for some. You can google this. If you have a smart phone, there is a free app called call control. Iphones appear to have apps also. Another one is called Mr. Number.

Report your callers here:

https://www.ftccomplaintassistant.gov/#&panel1-1
https://esupport.fcc.gov/ccmsforms/form1088.action
https://complaints.donotcall.gov/complaint/complaintcheck.aspx?panel=2

http://www.stopfraud.gov/report.html
http://www.fraud.org/

And here are the links to read and understand what the DNC's are, what they do and what they do not.

By State DNC lists:
http://800notes.com/res/DoNotCall.aspx

http://www.tcpalaw.com/
http://www.consumer.ftc.gov/articles/0108-national-do-not-call-registry
https://www.donotcall.gov/
http://www.ftc.gov/opa/2008/04/dncfyi.shtm
http://business.ftc.gov/documents/bus27-complying-telemarketing-sales-rule
http://business.ftc.gov/documents/bus27-compl ... -rule#DNCrights

http://www.nbcnews.com/business/consumer/ftc- ... n-texts-n374341
http://800notes.com/forum/ta-c5c7e69f0670886/ ... -spoofing-calls
http://800notes.com/forum/ta-c46b87360deec56/ ... -unwanted-calls
http://800notes.com/forum/ta-c4ffa8334de58ff/georgia-dc-out-of-business

Enforcement:
http://800notes.com/forum/ta-c33b770fc3695c0/ ... -associates-llc
http://800notes.com/forum/ta-c3355f57425c0d5/ ... alls-to-the-fcc
http://800notes.com/forum/ta-c17c24b9614a487/ ... ttery-scam-case
http://800notes.com/forum/ta-c116acd736280bb/ ... h-telemarketing
http://800notes.com/forum/ta-bfcd4eb5e5bf6d6/ ... y-ftc-and-il-ag
http://800notes.com/forum/ta-bf7e49d2ddb0453/ ... e-dnc-violation
http://consumerist.com/2015/04/08/robocalling ... ding-consumers/
http://transition.fcc.gov/eb/
http://www.consumerfinance.gov/blog/category/enforcement/
http://www.ftc.gov/enforcement
http://www.ftc.gov/opa/2013/09/ambrosia.shtm
http://www.ftc.gov/os/caselist/1223190/
http://www.consumerfinance.gov/newsroom/

Los Angeles. Didn't want to talk to me bad enough to leave a message. Don't answer calls from people you don't know. If it's legit, they'll leave a voicemail.

323-318-3008 was a telemarketer stating my credit card is eligible for a different interest rate, blah, blah, blah.  I am on the do not call list since its inception.  This is a scammer.  I have reported this number and other to the FTC and I'm still getting robo and telemarker calls.  STOP IT.