Charities, along with some Survey's and Political calls, are exempt from the DNC, however, they can still get into trouble for not placing you on a internal DNC when asked, you can also check your states laws in regards. Some states do not allow them to call on their state DNC laws which can differ from the federal.

http://www.tcpalaw.com/
http://www.kleinmoynihan.com/publication/new- ... ctober-16-2013/
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

Do consider maybe getting a call blocking device or phone.. You can google them and many are around $60.00 or so.

Report your callers here if they continue to call and harass:

https://www.ftccomplaintassistant.gov/#&panel1-1
https://esupport.fcc.gov/ccmsforms/form1088.action


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