They are calling me every hour on the hour! I am fed up even if I owe, this is against the law and clear and present harassment! I am reporting them to Consumer Financial Protection Bureau.
Sometimes they will use all methods to contact the person if they aren't able to reach the debtor directly - I've gotten calls for my ex-sister-in-law, who I haven't seen for years. However, they have access to credit services which can link up to next of kin or "people who they may know" and call them. Annoying, yes. Against the law, I'm not sure.