Debt collectors do this. I still go through cycles where I will get dozens of calls per day from debt collectors looking for people I have never heard of. I have to record the calls and then hopfully get them to violate the law then send it to the state’s attorney general and they stop, for a while.
You can also report them to the FTC. Once you’ve told them the person they’re looking for isn’t at your phone number, they’re required to not call it anymore, even if they don’t break one of the other laws. Reporting to the FTC is easy, online process on their website.