FCC Complaint: Prerecorded Voice
FCC Complaint: Live Voice
FCC Complaint: Abandoned Calls
Same person calls occasionally, probably a scam, the number (if real and not spoofed) is located in Waterbury, CT.
However, "Breast Cancer AM" or "Breast Cancer of America" can't be located in the Charity Navigator. It is also not registered with the CT Secretary of State.
However, there is an inactive corporation American Breast Cancer Association located in Stamford CT that has a "Forfeited" business status.