DSTV stop adding Showmax to my DSTV Account

DSTV or Showmax keep on adding Showmax to my Account without my knowledge and conscent. I don't watch showmax and I don't have their APP. When I call DSTV they tell me that they can't help me to remove Showmax and update my account accordingly. I do not have a contract with Showmax and the relationship is between the two of them, so they should not make their affair to have a problem on us. I am told I have to drive to a contact centre so that they can help me. What nonsense is that when I was previously helped over the phone regarding the same problem. What nonsense is that? The monopoly of pay TV is making them very arrogant and reckless in how they conduct themselves in relation to their customer service. If they need to help me they can do so on ***. Almost every month I receive a text thanking me for adding Showmax to my account.