Upgrade disaster

Vodacom contacted me on 6 Oct for an upgrade. I did the upgrade and entered into a new contract due to what was agreed upon for the add on benefits for my 3 cell phone lines. I received a new Samsung S20+ with no upgrade of my contract. When I enquire about my upgrade the consultant realize that I have received the phone for free. Then my bill was rectified and still no add on benefits. I have spent many hours since with the retention, upgrade division and general enquiries with several ref no and promises from consultants to get called back. Every time I phone Vodacom I must listen to a ridicules' message that tells me that my contract is upgradable in Oct 2023 and that my new contract will expire in Jan 2024. Wow, what a disaster. I cannot believe that one person have to negotiate to get the benefits for this *********** company after they have called me to sell me the benefits. Can someone at Vodacom with managers authority please call me to fix my problem once and for all. I want the benefits that was explained to me that lead me to enter into a new contract. This is the worst of worse business experience I have experience in a long time.