Charged for additional services i never wanted and asked for in the first place

A consultant calls me on the 9 Jan 2024 to tell me they are migrating my number, I am not going to have to pay 1 cent extra after that, this was after i made it clear "I dint want to buy anything extra" i dont need any change in my current premium. And they agreed. Now in Feb my Vodacom statement comes and i am paying now R623 extra because of the MIGRATION call i agreed to? Vodacom is adamant that i agreed to it. They would not send me the "recorded call" on my sms. i am advised to pay the extra R623 or be penalised for downgrading my contracts. I never asked Vodacom to call me. I would have called them if i needed a change. I am waiting for my contract to finish and this now happens to me. I hate what they are doing. i want no more from VODACOM. I want the contracts cancelled i cannot trust Vodacom. And i want everyone to know what they did to me.