Vodacom selling details to third parties

Good day,<br> <br> I have had my number for a number of years. I never used to get text messages selling me things nor phone calls from call centers. <br> I signed up for a Vodacom contract and got a phone call a week later from RCS giving me the privilege to use their card which I dont need at all. This happening a week after signing up with Vodacom. <br> Then I am also getting text messages from WISPS trying to sell me nonsense which never happened in the past. <br>