Called and left no message. Caller ID says "K Rogers TPM". I called back after hours using *67 to block my number. The message I get is "the call can not be completed at this time." (so the number is either spoofed or that's their outgoing message). I suspect this is the Tea Party Majority as they've been calling me lately on a bunch of other numbers. Interestingly, there is no phone number listed on the TPM's webpage contact info (Is this phone call really the TPM?). I googled the TPM and discovered that only about 1% of their donations actually go toward helping the tea party. I'd suggest finding another Tea Party group if you are so inclined politically.
Political calls are exempt from the DNC as a rule. You need to contact the main party and tell them to stop calling yourself. Then, when they call, you can make complaints with who ever the candidate is by going to their site and using the contact us page.