My Price and the POPI Act

I have received 3 calls from the Mr Price/Sheet Street Group since yesterday the 21st June 2018 where I answer and the person on the call does not say anything. I call the number back and tell them to remove my number from the system. I have been told that it has been declined and I will not be called again yet today I receive ANOTHER call with the same situation. I have received a call from ********** and ********** . I am certain that Mr Price is aware of the POPI Act! Remove my number from your system immediately or I will take further action.