***** and Deception, BEWARE!!!!!!

I contacted Cell C to cancel the last two of my contracts. I was told that the one contract will only be cancelled after 3 November 2022. When I inquired about the other contract I was told it ends on 11 November 2022 and I will only be able to cancel it on 11 October. During the course of last week I started perusing my old statements after receiving the new month's statement and I noticed that I was still paying for a handset that, according to July's statement had only two installments left. When I phoned customer care I was informed that there was still an installment left on the handset even though I had proof that it was paid up already. I ended the call extremely frustrated since I could not convince the lady otherwise even though I had proof. Soon after my son, who uses the phone, sent me a screenshot showing that the contract already ended on 1 October 2022. I called the retention department this morning and I was told I cannot cancel the contract with immediate effect even though I was deceived by Cell C about the end date of the contract. So, according to me, if a contract has ended already HOW ON EARTH can installments on the handset still be due and secondly why I am I **** to every time I try to cancel the contract about the correct expiry date?????? Please make sure you peruse your statements THOROUGHLY because Cell C does not think once about deceiving and de*****ing their long time customers!!!!!!!!!!!!!!!!