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How to get rid of someone else's debt collector?
As a former debt collector myself, I can tell you that we did occasionally get someone claiming that they weren't who they really were. However, it was pretty obvious who was telling the truth after a while. Above all else, just be calm and polite. Technically, you can also say "do not call this number again" and they have to stop calling, but I wouldn't do this right off the bat. Its best if they are convinced that you aren't the guy they're looking for. Calmness and politeness are traits that debtors usually lack, sometimes because they are just normal people overwhelmed with their situation, and sometimes because they are irrational loser (sorry, but its true). Either way, if you are consistently calm and unconcerned about their threats, they will either give up or realize you aren't the guy. Eventually they will stop calling you (or at least I know I would have stopped calling you).