Poor Service from Vodacom

I have been trying to cancel my Vodacom contract to accept a better package from another network. With restrictions due to covid and lockdown, I have to take the absolute best package for my pocket. A few months ago I had a bad experience with Vodacom and the customer care centre. This experience has taught me that loyalty is not rewarded through service at Vodacom. I have spoken to 5 people at the retentions department. The first 2 offered me a similar deal that I was happy with. Each of them said that they will phone me back to finalize. I am still waiting for a call back. The 3rd representative phoned me back the next day and tried to convince me to take another package, which I specifically do not want. The 4th person I spoke to told me that he would do a deal match and has sent it to his manager for approval. Still no call back and nothing is finalized. Today I phoned again to talk to the 5th person. The person advised me that the handset I want is not available on that package, contradicting the previous 4 agents. It is incredibly unfair for a customer to struggle like this. I was advised that a manager would give attention to this and phone me back... This is the 5th time that I was promised to be contacted. Every call that I made was between 25 and 40 minutes! Now I am waiting for that manager to call....