Most disappointing service EVER!!!

Cell C is THE most useless company I have ever had to deal with!!! I have been trying to upgrade/migrate the contract since the beginning of January 2023. I have had this contract for 16 years and every time I try to upgrade or deal with Cell C I have such bad service. On 11 January 2023, the consultant Simpiwe, was going to phone me back and as of today, 17 February 2023!! Tried again on the 27 January 2023, phoning upgrade department, was transferred 4 times and then was cut off. Amazing that you have to give the number you are querying but nobody calls back, especially when the call was dropped. Last Friday 10 February 2023, went on the Cell C app and bought a prepaid data card. On the app, paid for the Smartdata 10GB prepaid, money deducted from my bank account. As of today, 17th February, no sim card has been delivered (app stated that it would take 48 hours). I am on the line now, have spoken to 5 consultants Nhlankla, Katlego, Lungile, Zanele, Maxine and nobody can resolve the problem. I have now been told that I cancelled the contract and it is now a migration to prepaid data which will only be available 13 March 2023. I have paid pro rata for February and I can't use the data. I bought this on the Cell C app and now I get told that no money has not been received at Cell C. How is this possible when I bought it on the app? I have proof that the amount has gone off my bank account. I wanted to speak to a manager but the manager won't speak to me. Maxine told me that Joseph will phone me by the end of the day, not sure what day she is talking about. What disappointing service from Cell C!!!!! Oh yes and your survey doesn't work, keeps on saying there is a problem with the entry, maybe cos I rated the service a 3, which is bad.