Capital One Credit Card Complaint

Capital One Credit card department,

Credit card protection / Debt protection South Carolina

- - - -I believe that the above debt collection company purchased my debt from a Capital One credit card - my issue with them is that they called a phone number that had no association to the account and that I had never listed on any documents affiliated to this account. The phone number belonged to my - year old parents - how they found it? I have no idea. What are my rights? What are their rights? I do not want them to ever call my parents again, and I would like for them to stop calling me.