Vodacom contract

I have a contract with Vodacom. They’re supposed to be debiting R1080 per month, but they always debit more than that. I’ve called several times but they say I have subscriptions, I’ve spoken to the agents and asked them to cancel every subscription that’s there but they never do on top of that they don’t want to send me my monthly bill… so I don’t even know what they are billing me for.