Consent

Good day Vodacom I would like to know why companies would phone me on my tablet to market their products and services to me? My tablet is not listed as a method of contact, and yet I still receive phone calls on it, which to me means that you provide information to 3rd parties without the client's consent. I take this matter very seriously as the POPI Act stipulates that my information can not be given without my prior consent. I expect your feedback regarding this matter by close of business today.