mis-use of clients information.

yesterday, 2020/02/06 time :17: 21 pm i was called by a VERY RUDE SALES AGENT BY THE NAME OF NIVESH trying to sell me something, he caught me at a very bad time, i couldn't talk, so i just said i dont have a car and hung up... he continued calling me, demanded that i listen to HIM, i hang up again, he called 6 times after, THEN HE WENT TO MY WATSAPP TO TELL ME HOW STUPID I AM, i asked him if he knows of POPI laws, I DO NOT FEEL SAFE, THIS GUY HAS MY INFORMATION, HE KNOWS WHAT I DRIVE, MY ADDRESS, HE HAS SERIOUS ISSUES WITH REJECTION, FOR THE FACT THAT HE WENT TO MY WATSAPP TO SWEAR AT ME, SHOWS I'M NOT SAFE. I REQUEST SOMETHING DONE... he used my personal information for his personal gain.