Dispute unattended,misled and false information to make a sale

I have been misled by a sales consultant who called me and used Vodacom to mislead me she said I have to migrate my contract to Red 1gig contract if I don't want to change my services will be terminated because all vodacom customers are being imported to this Red premium contracts what made it extremely worse she said my contract is not going to be changed and I asked her numerous times am I still going to be able to top up she agreed knowing that she's changing my contract to an open line only figured out when I received my bill and I will report this to an ombudsman I'm disputing this bill she's is a ********* and worst of it all the agent I spoke to yesterday cut the call on me their customer service is pathetic unprofessional and rude and I will not entertain it