Harassingly calling the wrong people over and over and over!

This annoying company has been harassingly called me in between 3-10 times a day on both our company numbers, and the strangest thing of all of course Is the part where I don't have any accounts related to them and they keep looking for someone else. All of their non stopping harassments will lead to me suing for loss of business as their constant calling is preventing some of our existing as well as new clients to come through to us. STOP CALLING THE WRONG PEOPLE!!!! I cannot tell you where a person that I have no knowledge of is, resides or logically inform you of whereabouts which I have no knowledge off.