Fathers Debt Collectors Won’t Leave Me Alone

UPDATE: I ran all my reports through experian and none of his debts are on my report, and my credit score is sitting in the mid-high 700s. What should I do to get these guys to leave me alone? Would it be more worth it to collect all this info and sue?
For context, I haven’t spoken to my father since I was 16 years old, I’m about to be 21 now.
Week, after week, after week, I keep getting debt collector letters from his debt, even though I am not him. We share the same first/last name, but not middle. No matter how many times I call these people or ignore the letters, they keep coming. What do I do?
At some point this is just considered harassment right? HELP!
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