Chargeable Vodacom email 5GB

On the 14 November I received an sms from Vodacom that reads as follows “ Hi :-) Your Chargeable Vodacom Email 5GB Hybrid has been activated. To view your balances, visit the My Vodacom App or dial *135#. The future is exciting. Ready? Vodacom” Upon reading this sms I am hem called the customer care and spoke to Noku she then explained that Vodacom has done away with the 3GB space email that it introduced when I first had this contract and they have activated the 5GB without my consent. This email address was given to me for free by Vodacom and now the is a charge of R29 that has been included on my account without my consent. All I want is to Vodacom to cancel their email because clearly the do not understand the meaning of communication and I need my account to be credited with the money that they have doubled charged me for the service that I did not confirm with them that I need. I am even thinking of cancelling my contract with the company because of the way they had handled the above mentioned issues and very much disappointed.