Infringement of popi act

I have called vodacom on numerous occasions with regards to them sending me another customers cellphone bill every month. I have spoken to the back office and they keep advising me that they have removed my details and I will not receive the other customers bill. I am still receiving it. I think Vodacom is not aware of the popi act that is in place. This is a violation of this act by sharing details belong to another customer with me. Maybe vodacom chooses to ignore my numerous request to stop sending me another clients bills? Not sure why this has not been attended to??? It is not my responsibility to keep call Vodacom about this.