800notes is not affiliated with your callers, we are not calling you either. 800notes is a forum for reporting who calls you and any information you may have about the call to share with other forum users. It is highly doubtful that your callers are reading here also.
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.