Miss-led into new contract/upgrade

Dear Vodacom, I was misled by a sales consultant into signing a contract upgrade under the assurance that all my other contracts would be converted to prepaid. A week has passed with no feedback, and the contact centre keeps transferring me without resolution. Ticket 312929 was raised, yet no response has been provided. I require this matter to be resolved before the next billing cycle to avoid incorrect charges. My contact: ***