Harrassing messages being recieved in error

I have never had an ABSA homeloan or any accounts with Absa but keep getting sms from MBD Attorneys for a homeloan. I called and it is a different person linked to the case but I still get the messages. I have tried blocking the number but still get the messages. I don't know if there is a any way to report this to POPI Act regulator as highly irate that they are using my number and cannot resolve removing it from thier database.