Nuisance CALLS to get a TRACKING device from ALTEC TRACKER!

What a nuisance! I am receiving calls from ALTEC tracker, everyday from the number ********** 310 selling me a tracker which I have refused to buy- yet they call me DAILY. I have blocked their number and as a result their call gets dropped, but boy-oh-boy, they ARE NOT GIVING UP!! I am hoping that their CEO or whoever is in charge can read this review and pass this message to his/her call centre staff to PLEASE STOP CALLING ME, I AM NOT INTERESTED, PLEAAASE!!