Pestering - Does not comply with POPI Act

MiWay is the one company I hate most on earth, they are pestering and rude on the telephone. They do not understand what 'no' means. I have had issues with them spamming me and calling me for as long as I can remember. Since the POPI Act came into effect this year I had a call in August where I expressly asked them to delete all records of mine from their systems and that I would take it up with the Information Regulator if they ever dared to contact me again. Today they contacted me again. Once I figure out how to submit the complaint to the Information Regulator I will do so.