Harrassment

For some reason some companies cant just back off.<br> <br> Cell c continuously call me on my Mtn line and plays elevator music then hang up when they can see my number is active.<br> Secondly I bought a data sim and package from Cell c. I have not given my number to anyone and yet cold callers call me on my tablet with my name. The only company that could have distributed these details is cell c.<br> <br> Cell c Please advise me when I gave you permission to sell my information and please stop harassing me.