Poor cell c services and response

I have been with cell c for about 8 years, I got a new contract on a different number for the past 2 years. I am eligible for an upgrade since 12 April. I called to upgrade on the 26th of May to upgrade as well as cancel the old contract which is now a month to month basis. The lady confirmed that I have been upgraded and that the new contract will be debited by the end of June and that the old contract will no longer be upgraded. The following day the lady phoned me back claiming that she had forgotten to tell me that the old benefits will no longer be app****, which I was aware of and accepted. On the 1st of June I noticed that I had still received old benefits and I called cell c customer cervices again to query on this. As it turns out, the contract renewal was never done and the cancelation on the old contract was not loaded either. I had spoken to a gentleman in a higher rank and told me that the calls will be reviewed and that it does show on the system that I had indeed requested to cancel and upgrade, however he also confirmed that it had not been loaded and thus they will review and get back to me within 48 hours. Today, 08/06/2021 I had still not received any feed back. I called cell c yet again and spoke to a lady in the "Retainment department" and she confirmed that no query had been logged. So yet again I have to wait for 48 hours so that they may review the issue. This being said the reason I upgraded is that I took a much cheaper contract since my first born was born 7 weeks ago and finances are more than tight. The savings I will make on the new contract will be around the area of R1000. I have been receiving extremely poor service and response from cell c and it is highly unlikely that I will ever make use of their services again or suggest that some one make use of their services.