Shut down these harassers

This company is harassing me every single day looking for someone else. I have no business with this company and never gave my number or permission to contact me. The consultants have no respect or phone etiquette when speaking. This goes against the POPI act and this company should be held accountable. I have asked for them to take my number from their system multiple times to no avail. That raises a question whether its incompetence or just the company's policy to not care.