Vodacom Spams its own customers continuously

I am getting tired of Vodacom spamming me, their own contracted customer with so called value added services and vodabucks nonsense. Despite my prepaid number having opted out of everywing I still het two sms's a day or they phone my other contract number. I only want a good data network, not medical services and other ****. Stop it now or this Blue chip client joins teams Yellow!