Outsurance harrasing with calls and messages 8 times a day for more than a year.

Hi, I have cancelled my policies with Outsurance in June 2019, but to this day, they phone and message me 6 to 8 times a day claiming they have received a message from me. I have never called this company since June 2019 which was my last contact with them. I am constantly explaining that I did not contact them, they need to get their clients contact/email information correct. This company does nothing to fix this error as they disturb me while I am in meetings, in classes, processing urgent tests, I even had to pull off along the side of the road to tell them the same again that they got the wrong person. They don't tell how they got the message only that it came from me. All they tell me is that it has to do with my car insurance. I never had a car insurance policy with them. When I try to assist them with the information they have, then I keep being interrupted while I am speaking. They do not understand how frustrating their calls and messages are as it completely fills up my voicemail. I am sure they have a report on how many calls they make to a client or ex client's number, and it is ridiculous how many times a day since June 2019 to date they have been contacting me. I have had clients walking out on meetings and meetings being cancelled because of their constant interruptions and harrasment. This is what it is. Harrasment because you cannot contact somebody 8 times a day for more than a year and still not update your client database information. I don't know what more to do except now taking this to the legal people. My name is Gillian Patel. You have my contact details when you need to apologise.