Standard Bank Harassment

Standard Bank debt collection keeps calling me at 7:30 in the morning to speak to a MR TRENT, i have told them many times that he does not have this number and that they are in fact calling on my work cell phone and that my number should be removed from their system.<br> <br> The call center agents have read back the note on their system saying that they have the incorrect number but they continue to call me and this is becoming Harassment. i need my number removed from their systems or i am going to proceed with legal action. They can see my details when they respond!!