MiWay and POPIA

Does MiWay have a different interpretation of POPIA to the rest of us? I understood that if a company acquired your details before POPIA (and I'm not sure how you ever got that consent from me), then they had one attempt to call me to get me to opt in, failing that they need remove my details. I still get many unwanted direct marketing attempts from MiWay...there is clearly no concern for the POPI act.