Selling of Client Information

It started when Mr Ralemasu app**** for a home loan with Nedbank but somehow my number was attached to his account. I received SMSs and even calls when he was in arrears and, despite me informing Nedbank over the 15 odd years that he had his home loan that my number was not his, they never resolved it. I was really happy for Mr Ralemasu when he finally paid off his home loan (I received the congratulatory SMSs) and thought this would finally stop. Nedbank then sold his information to DebtBusters and others (who now SMS me daily as Mr Ralemusa). I receive car insurance and other offers for Mr Ralemusa regularly as well. It is obvious that the number was sold by Nedbank as only they had my number incorrectly assigned to Mr Ralemusa. At least they waited until he was no longer a client I suppose but surely this is an ******* practice in terms of POPIA? I've set up my phone so that I no longer get SMS notifications due to this *******.