Inexplicably bad experience from an otherwise civil relationship with Vodacom

I've had the rather unpleasant experience of my airtime being debited from my account everyday for a while now, I contacted Vodacom to query this and was notified that I had subscribed to various services that debited my airtime balance everyday. I had no recollection of ever subscribing to these services but all I wanted was to have them cancelled and not have this issue going forward.

Today I noted that my airtime was once again being depleted without my using it. I contacted Vodacom once again and was advised that there is nothing on their system indicating that my phone call had anything to do with the cancellation of services/subscriptions. I requested a refund as I felt Vodacom is liable for the continued debiting of my account. The consultant, in a rather pessimistic tone told me no query could be logged to receive the voice recording to prove my case and rather that an e-mail would be sent to a team leader who is off(Why would this be sent to someone who isn't in today and returning in 2 days?).

I'm extremely upset at the level of service, two possibilities exist regarding my phone call on the 1st of July; Either the consultant willfully **** to me regarding the cancellation of the subscriptions or this is a result of a ********** system malfunction. The point is Vodacom is at fault and I want the company to admit this and do right by me.