Real estate agent harassment and unsolicited marketing!!! (After numerous requests for YEARS to stop contacting me!)

On an almost daily basis do I get harassed by real estate agents wanting to evaluate and sell my property. I am every PoPI database requesting NOT to be contacted yet real estate agents keep calling, texting and WhatsApping. Me this is an invasion of my privacy and personal details! Where is the source and how do I get myself removed from it? I need your help - I beg you PLEASE!!!!