Harassment of calls for non customers

I feel disappointed with cartrack. They are harassing me with call asking me about ms legodi of which i said i don't know her but they keep calling me. They can call 5 to 10 a day. I tried to tell them to leave me alone but they can't stop. I don't have any contract with them whatsoever but call can't stop. I feel sorry for their customers if they can call non customers everyday even when they ask to stop they persist. I would never recommend cartrack to anyone i can see their service is about harrassment. I m so gatvol with ur calls please stop.