Fibre contract dispute

Vodacom is a ****! They made me sign up for a 24 month fibre contract without being transparent about other available contract options. It didn't end there, they even went further and closed my case/query SR*** without hearing me out. They claim to have listened to the recorder but in their email response there's no mention that they were actually transparent to me regarding available options. Their social department (X/Twitter) is also useless. They just phoned to tell me there's nothing they can do, the billing department has made the decision to close the case. Every time I send an email I receive nothing but an automated response.