Old Mutual mis-uses my personal information under POPIA

I receive numerous automated sales calls on my cellphone for funeral cover, with an Opt-Out option, which is ******* under POPIA. I called ***to insist that the remove my number as I have never given permission for them to use my number for marketing. I spoke to Andiswa, she put me through to Customer Service. The system then asked me to ut in the ID number of the client, which I can't do, as I do not (and will never have) a policy with Old Mutual. This is mis-use and abuse of my personal information, and despite my effort to speak to them, they simply sent me down a rabbit hole.