Extremely poor service VODACOM

Extremely poor service VODACOM, I called about four times already and I have been transferred to many departments with no satisfaction from any of them they always say they will contact me to resolve my issue and I have not been contacted yet. My contract was recently upgraded and the salesperson was dishonest and misleading, what was agreed upon was not fully given to me. The contract was upgraded on the 25 November 2022, I called the next day to lay a complaint. Vodacom has not yet got back to me.