CELL C HORROR - The worst cellphone company ever

I went to the Fourways mall branch on 28 February 2021 to give notice a month's notice for my contract that was supposed to end and 31 March 2021. I was told that I came on the wrong date as I can only do the notice on 3 March 2021. I then called the customer services centre on 3 March to request that the contract be migrated to prepaid after the expiry of the 24 months contract. I even received an SMS confirming receipt of my request to migrate at end of contract on 3 March. On 3 April, I again received confirmation that the account has been migrated to Prepaid and received a welcome message. The problem is that Cell C is still charging a debit order on my account for a cancelled contract. The recent debit order was taken on 30 April 2021. I have been calling the customers services number for hours and Im being transferred from numerous ladies (Chisa, Vuyelwa, Lindiwe) and so called departments but all of them were useless and clueless. They cant explain why Im being charged for a service that was cancelled. Instead they are just saying they are sorry but that doesnt solve the issue of the ****** money. Cell C is a bunch of ******* chowing peoples monies. They do this knowing very well that the debit order cant be cancelled. Thats why that company is in financial ruins because they ***** people's hard earned money. I WILL NEVER HAVE A CONTRACT AT THIS HORRIBLE CELLPHONE COMPANY