Harassment from callers

These people keep on calling to try and sell insurance to me and if you ask them to remove you from their list they tell you they are allowed to have your number! I now asked the ladynif shenis aware of the POPI act and she said she would "educate" me on that but she is allowed to call me. I was so upset i put the phone down. I feel so invaded as this my right to say stop calling me! They are borderline harassing people! I never want to receive a call from them again!