Caller: I have no idea

Don’t know who this is called me 3 times in a row for 3 days 1 call a day for 3 days at same time when I answer dead on other end I told them I not know who they are and would ask who them and say hello nothing it cuts off 2nd time I said I Wallis like know who this is how I get my number what do u want nothing cuts off 3rd time I said this is a private number u keep calling me not saying who u are call again and I will have u reported this is now harassment and that bakes laws not mention this number is tracked(my number is not tracked I just say is to scare them) this number is not listed and is on a do not call register the number u calling by calling it unsolicited is an offence by law do not call again or will be Consequences. Still dk who they are but they have not called again. No records anywhere of this number when I put my phone on private I called back says this number not real yet it must be to call me 3 days in a row at the same time. Have not had a call since I told them I would report them to the Authorities