Vodacom lies to clients and cheats them

I was contacted about my contract upgrade and on the call confirmed that this was nothing new to be added to my account and that I would not be paying one cent extra and turns out it's a brand new number, I queried it and they say it's invalid. I have asked for the record of the call and am yet to receive it as I want this to go further. Vodacom better get someone high up to contact me as I'm happy right now, I've been with them for over 15 years and this is how they treat me. I will take this further