Unprofession behaviour - no knowledge of POPIA

Just received a call from a sales agent who calls himself SILVER from Netstar in Durban. Upon asking him about POPIA, he advised that he has no knowledge of it as my information was retrieved from their database. Not sure what database he is referring to as I have never had any dealing with Netstar. I asked him to call his supervisor, he advised that he is also the supervisor. He also mentioned that since I know about this POPIA, I need to educate or train him about it.

Such unprofessional behavior should be dealt with by the company, or I will take legal action against Netstar