Vodacom charges for unauthorized "Entertainment Services"

So I found out that Vodacom has been charging us for "Entertainment Services" without us having subscribed to this so called "Value Added Service" at all. What's more is that if you search Google this appears to be a major issue with Vodacom. In fact, this is my second run in with Vodacom with regards to charges and services that I did not ask for or give permission for. The previous issue was when I suddenly had a monthly service fee for R1200+ on a data contract that should cost R100pm. Upon investigation we found that Vodacom had put through a new contract on my name complete with a shiny top of the range iPhone. It took more than a month for the internal investigation as well as me laying charges of ***** at the police station and only then was the money I paid credited to my account. The excuse was that it was not Vodacom's fault then and according to the lady at the Vodashop this is a regular thing where people end up with VAS subscriptions that they claim they did not apply for. Here we are again with months worth of charges on two numbers and had I not checked on Vodacom it would have carried on indefinitely. Why is Vodacom's security so poor that outside parties can put charges on our accounts or take out contracts without proper signatures and authorization? Is it because Vodacom benefits from such *****?

Btw, my last complaint against Vodacom for disabling Visual Voicemail without my consent and being unable to reactivate it has after months and many calls to the call centre still not been sorted.

Why do we stick with Vodacom? I really don't know!