Vodacom force spam to their clients

I really dont understand your concept, we pay you monthly and in turn you send us spam and information we DONT want. you also conveniently add no number so the forced spam we receive cant be blocked or rep**** to. So let me see if i've got this right, we pay you and you force spam and marketing onto us. Great customer service..... please tell me know if you are incapable of stopping this arrogant, self-entitled behavior so i can consider changing networks