Vodacom - Debit order theft via subscriptions services

Dearest Vodacom.

Please explain to me why some random third party subscription service, can just randomly subscribe me to their ********** activity, without you actually sending a SMS or email verifying that I am the one initiating? Some ********** third party subscribes me without my consent and therefore get added onto my bill and get debit order access to my banking account. The fact that you have zero checks and balance for this ********** activity freaks me out. Please explain to me why I should let you keep your debit order privilege if you are going to abuse it/let third parties abuse it?

Who should I lay the ******** charges against? You or the third party?