POPI Act contravention

Yesterday a lady from RCS phoned me, on my work number, of all things. Not sure where she got my number from, as I have not requested anything from RCS. I asked her to never phone me again on my landline at work. Now another gentleman from RCS phoned me, again on my landline. Can you please remove me from your database, as I do not want anything from you. And nobody gave you permission to contact me, especially not on my work number where I am not allowed to take personal calls. This is in contravention of the POPI Act