******** subscriptions without consent

This telecommunications service provider is turning into a big **** network. I am being subscribed to Telkom plus services via SMS ads and options to opt out if I wish to do so. Since when is it a customer's duty to cancel subscriptions which was never even subscribed for? I am being billed everyday and have been trying to opt out via SMS unsuccessfully numerous times already. It's been 5 days now that I've been trying to contact them but no operator is available to assist me with my query as lines are always busy. I've decided to take the matter up with legal representation due to the poor service and non compliance. You ****med the wrong customer.