CellC for another service provider

My contract went into arrears in December 2021. I then made arrangement with them to pay monthly via Easy Pay. This I did and in September 2022 I was handed over to their attorneys (CSS). I then discovered that many of the payments I made was not credited. They then sent me a different account and reference to use. I also sent them proof of payments. But I still received I still received phone calls from their attorneys. I even later received requests for payments from other attorneys (MBD). Then a CSS consultant said he would request CellC to send me a statement, then I can reconcile. Two months later I phoned, and the consultant said that CellC normally takes their time to send these statements. I was told to stop paying until I received it. Later I received a letter from CSS stating that if I paid their unpaid balance, then I would get a 50% discount. So 19/01/2023 I phoned to ask what their balance was. I was told that I can only get a 20% discount. The 50% was just until 31/12/2023. Anyway, I paid the outstanding amount. To date I still have not received the statement. I would therefore like to warn the users that CellC does not know what is going on administratively. Even their attorneys do not have all the information that one would expect them to have. I know all this happened because I defaulted, but one would expect that when you have an arrangement, then the least is that your money just does not go missing.