robocall from "Breast Cancer Research" to my private unlisted do-not-call mobile number that has never been shared with ANY organization. Asked for me by my first name. I said I was not that individual, and the robot then went into a spiel on breast cancer research while I explained simultaneously my displeasure at being called on my private unlisted number. The robot did not listen to me so I hung up and blocked the number.
Two possibilities:
1) They are calling every number, or every number in a specific area code and exchange (the middle 3 digits of a phone number) and your number was next.
2) If you've ever entered a contest or drawing you have given the organizer permission to call you and to share your number as they see fit. Telemarketers buy lists of numbers.