POPIA Breach - Reporting them to the Information Regulator!

For the past 2 months, I have been on numerous phone calls and been into stores about 10 times. And to this day I get daily phone calls for an account that is not mine that is in arrears. Someone has used my number as a backup line, and Vodacom refuses to remove it because they need that persons permission.

I am now trying to report them to the Information regulator as a POPIA breach, and Vodacom continues to put the phone down on me every time I ask who their Information officer is.