Vodacom is full of lies!!!!

I am not happy at all with Vodacom,they gave me false information regarding a contract deal. I have a contract with them for an iPhone 12 specifically told the lady/agent I spoke to that I want a top up contract and that means if ever my data is depleted before time I want to buy my own,today I received an invoice of extra fees and they told me I did an open line bundle which is NOT true,they refuse to migrate immediately meaning they want to charge me extra amount every month whereas I don’t want to be on open line,kindly assist this matter with Vodacom because they are clearly trying to **** me! Received an email from Lennon and I spoke to a lady by yandisa who made it seem like it’s easy to migrate to top up but they are giving me problems and not solutions