Vodacom data debit

<p>Vodacom has suddenly decided to debit 800 rand from my account instead of the usually 308 rand agreed on the contract. They say i signed up for a month to month 2 gig data deal in July. The issue is if that is so why wasnt i debited the data amount at the begining of August and now come 1st of September im double debited a whopping R806 for a service i never agreed to, simply unbelievable and shocking</p>