Misleading vodacom Agents(chasing sales)

-on the 29th of April (2024) ,i was upgraded without my knowledge. i was told it was just a migration to a lower package and was told i can cancel the contract this coming June. to my surprise i received an invoice showing and upgrade. -on 30th of April an agent called me from vodacom saying that he could migrate my other remaining numbers to a lower package, to my surprise all package where double premiums.

i have been calling and been transferred to various departments. as it stands i have not received any resolution's nor acknowledgement that i have raised a query. so am darkness as to a way forward.